Build started at 6:28 PM... 1>------ Build started: Project: OctoplusHuawei, Configuration: Release Any CPU ------ 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\EmptyArray`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\FXAssembly.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\ThisAssembly.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\AssemblyRef.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\__DynamicallyInvokableAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\IAssemblyEnum.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\IApplicationContext.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\IAssemblyName.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\ASM_CACHE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\CANOF.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\ASM_NAME.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\Fusion.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\Win32Native.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\OAVariantLib.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\Registry.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\RegistryHive.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\RegistryKey.cs(18,2,18,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\RegistryValueOptions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\RegistryKeyPermissionCheck.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\RegistryOptions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\RegistryValueKind.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\RegistryView.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\UnsafeNativeMethods.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeLibraryHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeFileHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeFileMappingHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeFindHandle.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeLocalAllocHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafePEFileHandle.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeRegistryHandle.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeViewOfFileHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeWaitHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeHandleZeroOrMinusOneIsInvalid.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeHandleMinusOneIsInvalid.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\CriticalHandleZeroOrMinusOneIsInvalid.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\CriticalHandleMinusOneIsInvalid.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeAccessTokenHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeLsaLogonProcessHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeLsaMemoryHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeLsaPolicyHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeLsaReturnBufferHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeProcessHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Win32\SafeHandles\SafeThreadHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Runtime\Hosting\StrongNameHelpers.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Runtime\Hosting\IClrStrongNameUsingIntPtr.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Runtime\Hosting\IClrStrongName.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Microsoft\Reflection\ReflectionExtensions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AggregateException.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AggregateException.cs(68,10,68,16): error CS1001: Identifier expected 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AggregateException.cs(68,10,68,16): error CS1002: ; expected 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AggregateException.cs(68,10,68,10): error CS1056: Unexpected character '\u002E' 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AggregateException.cs(104,10,104,16): error CS1001: Identifier expected 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AggregateException.cs(104,10,104,16): error CS1002: ; expected 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AggregateException.cs(104,10,104,10): error CS1056: Unexpected character '\u002E' 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AppContext.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AppContextDefaultValues.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AppContextSwitches.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Object.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\__Canon.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ICloneable.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Action`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Action.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Action`2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Action`3.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Action`4.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Func`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Func`2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Func`3.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Func`4.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Func`5.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Action`5.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Action`6.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Action`7.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Action`8.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Func`6.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Func`7.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Func`8.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Func`9.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Comparison`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Converter`2.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Predicate`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Array.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\SZArrayHelper.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ArraySegment`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IComparable.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IComparable`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IEquatable`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ThrowHelper.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ExceptionArgument.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ExceptionResource.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ITupleInternal.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Tuple.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Tuple`1.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Tuple`2.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Tuple`3.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Tuple`4.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Tuple`5.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Tuple`6.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Tuple`7.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Tuple`8.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IValueTupleInternal.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ValueTuple.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ValueTuple`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ValueTuple`2.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ValueTuple`3.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ValueTuple`4.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ValueTuple`5.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ValueTuple`6.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ValueTuple`7.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ValueTuple`8.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TupleExtensions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\String.cs(18,2,18,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StringSplitOptions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StringComparer.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\CultureAwareComparer.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\CultureAwareRandomizedComparer.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\OrdinalComparer.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\OrdinalRandomizedComparer.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IWellKnownStringEqualityComparer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StringComparison.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Exception.cs(19,2,19,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DateTime.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DateTimeKind.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DateTimeOffset.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\SystemException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\OutOfMemoryException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StackOverflowException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DataMisalignedException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ExecutionEngineException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Delegate.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DelegateBindingFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\MulticastDelegate.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\__Filters.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\__HResults.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\LogLevel.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\SwitchStructure.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\BCLDebug.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\MemberAccessException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Activator.cs(20,2,20,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AccessViolationException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ApplicationException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ResolveEventArgs.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AssemblyLoadEventArgs.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ResolveEventHandler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AssemblyLoadEventHandler.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AppDomainInitializer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AppDomainInitializerInfo.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AppDomain.cs(33,2,33,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\CrossAppDomainDelegate.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AppDomainHandle.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AppDomainManagerInitializationOptions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AppDomainManager.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AppDomainPauseManager.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\_AppDomain.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AppDomainSetup.cs(21,2,21,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IAppDomainSetup.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\LoaderOptimization.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\LoaderOptimizationAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AppDomainUnloadedException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ActivationContext.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ApplicationIdentity.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ApplicationId.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ArgumentException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ArgumentNullException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ArgumentOutOfRangeException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ArgIterator.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ArithmeticException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ArrayTypeMismatchException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AsyncCallback.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Attribute.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AttributeTargets.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\AttributeUsageAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\BadImageFormatException.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\BitConverter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Boolean.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Buffer.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Byte.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\CannotUnloadAppDomainException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Char.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\CharEnumerator.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ConfigEvents.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ConfigNodeType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ConfigNodeSubType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\BaseConfigHandler.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ConfigTreeParser.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ConfigNode.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\CLSCompliantAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TypeUnloadedException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\CompatibilitySwitches.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\__ComObject.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Console.cs(18,2,18,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ConsoleCancelEventHandler.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ConsoleCancelEventArgs.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ConsoleColor.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ConsoleKey.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ConsoleKeyInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ConsoleModifiers.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ConsoleSpecialKey.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ContextMarshalException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Base64FormattingOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Convert.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ContextBoundObject.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ContextStaticAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Currency.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\CurrentSystemTimeZone.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DayOfWeek.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DBNull.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Decimal.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DefaultBinder.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DelegateSerializationHolder.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DivideByZeroException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Double.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DuplicateWaitObjectException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Empty.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Enum.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\EntryPointNotFoundException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DllNotFoundException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\EnvironmentVariableTarget.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Environment.cs(22,2,22,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\EventArgs.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\EventHandler.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\EventHandler`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\FieldAccessException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\FlagsAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\FormatException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\FormattableString.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\GCCollectionMode.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\InternalGCCollectionMode.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\GCNotificationStatus.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\GC.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\SizedReference.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Guid.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IAsyncResult.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ICustomFormatter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IDisposable.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IFormatProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IFormattable.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IndexOutOfRangeException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IObservable`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IObserver`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IProgress`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\InsufficientMemoryException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\InsufficientExecutionStackException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\LazyHelpers.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Lazy`1.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\System_LazyDebugView`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Int16.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Int32.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Int64.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IntPtr.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Internal.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\InvalidCastException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\InvalidOperationException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\InvalidProgramException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\InvalidTimeZoneException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IConvertible.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IServiceProvider.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\LocalDataStoreHolder.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\LocalDataStoreElement.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\LocalDataStore.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\LocalDataStoreSlot.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\LocalDataStoreMgr.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\MarshalByRefObject.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Math.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Mda.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\MethodAccessException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\MidpointRounding.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\MissingFieldException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\MissingMemberException.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\MissingMethodException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\MulticastNotSupportedException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\NonSerializedAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\NotFiniteNumberException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\NotImplementedException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\NotSupportedException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\NullReferenceException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Number.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ObjectDisposedException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ObsoleteAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\OleAutBinder.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\OperatingSystem.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\OperationCanceledException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\OverflowException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ParamArrayAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ParamsArray.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ParseNumbers.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\PlatformID.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\PlatformNotSupportedException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Progress`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ProgressStatics.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Random.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\RankException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ResId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\CtorDelegate.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TypeNameFormatFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TypeNameKind.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\RuntimeType.cs(26,2,26,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ReflectionOnlyType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Utf8String.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\RuntimeArgumentHandle.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\RuntimeTypeHandle.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\RuntimeMethodHandleInternal.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\RuntimeMethodInfoStub.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IRuntimeMethodInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\RuntimeMethodHandle.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\RuntimeFieldHandleInternal.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IRuntimeFieldInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\RuntimeFieldInfoStub.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\RuntimeFieldHandle.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ModuleHandle.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Signature.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resolver.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\SByte.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\SerializableAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\SharedStatics.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Single.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\STAThreadAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\MTAThreadAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TimeoutException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TimeSpan.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TimeZone.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TimeZoneInfoOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TimeZoneInfo.cs(19,2,19,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TimeZoneNotFoundException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Type.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TypeAccessException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\SafeTypeNameParserHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TypeNameParser.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TypeCode.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TypedReference.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TypeInitializationException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TypeLoadException.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\UInt16.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\UInt32.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\UInt64.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\UIntPtr.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\UnauthorizedAccessException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\UnitySerializationHolder.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\UnhandledExceptionEventArgs.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\UnhandledExceptionEventHandler.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\UnSafeCharBuffer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ValueType.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Variant.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Version.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Void.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\WeakReference.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\WeakReference`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\XmlIgnoreMemberAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\CLRConfig.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ThreadStaticAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Nullable`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Nullable.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DateTimeFormat.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DateTimeParse.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\__DTString.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DTSubStringType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DTSubString.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DateTimeToken.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DateTimeRawInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ParseFailureKind.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ParseFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\DateTimeResult.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\ParsingInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\TokenType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\CompatibilityFlag.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\MemoryFailPoint.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\GCLargeObjectHeapCompactionMode.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\GCLatencyMode.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\GCSettings.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\AssemblyTargetedPatchBandAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\TargetedPatchingOptOutAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\ProfileOptimization.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\StringFreezingAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\ContractHelper.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\AccessedThroughPropertyAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\AssemblyAttributesGoHere.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\AssemblyAttributesGoHereS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\AssemblyAttributesGoHereM.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\AssemblyAttributesGoHereSM.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CallConvCdecl.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CallConvStdcall.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CallConvThiscall.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CallConvFastcall.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\RuntimeHelpers.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\RuntimeFeature.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CompilerGeneratedAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CustomConstantAttribute.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\DateTimeConstantAttribute.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\DiscardableAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\DecimalConstantAttribute.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\DisablePrivateReflectionAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CompilationRelaxations.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CompilationRelaxationsAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CompilerGlobalScopeAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\ExtensionAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\FixedBufferAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IndexerNameAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\InternalsVisibleToAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\FriendAccessAllowedAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsVolatile.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsByRefLikeAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\MethodImplOptions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\MethodCodeType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\MethodImplAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\FixedAddressValueTypeAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\UnsafeValueTypeAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\RequiredAttributeAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\LoadHint.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\DefaultDependencyAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\DependencyAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\TypeDependencyAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CompilerMarshalOverride.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\HasCopySemanticsAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsBoxed.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsByValue.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsConst.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsExplicitlyDereferenced.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsImplicitlyDereferenced.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsJitIntrinsic.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsLong.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsPinned.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsSignUnspecifiedByte.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsUdtReturn.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\StringHandleOnStack.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\ObjectHandleOnStack.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\StackCrawlMarkHandle.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\PinningHelper.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\JitHelpers.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\ScopelessEnumAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\SpecialNameAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\SuppressMergeCheckAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsReadOnlyAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IsCopyConstructed.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\SuppressIldasmAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\NativeCppClassAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\DecoratedNameAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\TypeForwardedToAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\TypeForwardedFromAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\ReferenceAssemblyAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\RuntimeCompatibilityAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\RuntimeWrappedException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\ConditionalWeakTable`2.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\DependentHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CallerFilePathAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CallerLineNumberAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\CallerMemberNameAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\StateMachineAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IteratorStateMachineAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\ITuple.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\AsyncStateMachineAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\AsyncVoidMethodBuilder.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\AsyncTaskMethodBuilder.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\AsyncTaskMethodBuilder`1.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\AsyncTaskCache.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\AsyncMethodBuilderCore.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IAsyncStateMachine.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\INotifyCompletion.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\ICriticalNotifyCompletion.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\TaskAwaiter.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\TaskAwaiter`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\ConfiguredTaskAwaitable.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\ConfiguredTaskAwaitable`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\YieldAwaitable.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\FormattableStringFactory.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IDispatchConstantAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\IUnknownConstantAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\CompilerServices\TupleElementNamesAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\BinaryCompatibility.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\ComponentGuaranteesOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\ComponentGuaranteesAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\ResourceConsumptionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\ResourceExposureAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\ResourceScope.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\SxSRequirements.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\VersioningHelper.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\TargetFrameworkAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\TargetFrameworkId.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\MultitargetingHelpers.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\CompatibilitySwitch.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Versioning\NonVersionableAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_Activator.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_Attribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_Thread.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_Type.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_Assembly.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_MemberInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_MethodBase.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_MethodInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_ConstructorInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_FieldInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_PropertyInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_EventInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_ParameterInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_Module.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_AssemblyName.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ArrayWithOffset.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UnmanagedFunctionPointerAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TypeIdentifierAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\AllowReversePInvokeCallsAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\DispIdAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComInterfaceType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\InterfaceTypeAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComDefaultInterfaceAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ClassInterfaceType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ClassInterfaceAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComVisibleAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TypeLibImportClassAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\LCIDConversionAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComRegisterFunctionAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComUnregisterFunctionAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ProgIdAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ImportedFromTypeLibAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\IDispatchImplType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\IDispatchImplAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComSourceInterfacesAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComConversionLossAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TypeLibTypeFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TypeLibFuncFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TypeLibVarFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TypeLibTypeAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TypeLibFuncAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TypeLibVarAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\VarEnum.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UnmanagedType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\MarshalAsAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComImportAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\GuidAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\PreserveSigAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\InAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\OutAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\OptionalAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\DllImportSearchPath.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\DefaultDllImportSearchPathsAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\DllImportAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\StructLayoutAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\FieldOffsetAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComAliasNameAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\AutomationProxyAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\PrimaryInteropAssemblyAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\CoClassAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComEventInterfaceAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TypeLibVersionAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComCompatibleVersionAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\BestFitMappingAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\DefaultCharSetAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\SetWin32ContextInIDispatchAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ManagedToNativeComInteropStubAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\CallingConvention.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\CharSet.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\COMException.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\CriticalHandle.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ExternalException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\GCHandleType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\GCHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\GCHandleCookieTable.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\HandleRef.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ICustomMarshaler.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_Exception.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\InvalidOleVariantTypeException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\LayoutKind.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\CustomQueryInterfaceMode.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\Marshal.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ImporterCallback.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\MarshalDirectiveException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\PInvokeMap.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\RuntimeEnvironment.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\SEHException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\SafeBuffer.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\SafeHandle.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\SafeHeapHandle.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\SafeHeapHandleCache.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\StringBuffer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\NativeBuffer.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\BStrWrapper.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\CurrencyWrapper.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\DispatchWrapper.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ErrorWrapper.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UnknownWrapper.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\VariantWrapper.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComMemberType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ExtensibleClassFactory.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ICustomAdapter.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ICustomFactory.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\CustomQueryInterfaceResult.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ICustomQueryInterface.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\InvalidComObjectException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\AssemblyRegistrationFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\IRegistrationServices.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TypeLibImporterFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TypeLibExporterFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ImporterEventKind.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ExporterEventKind.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ITypeLibImporterNotifySink.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ITypeLibExporterNotifySink.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ITypeLibConverter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ITypeLibExporterNameProvider.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ObjectCreationDelegate.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\RegistrationClassContext.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\RegistrationConnectionType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\RegistrationServices.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\SafeArrayRankMismatchException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\SafeArrayTypeMismatchException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TypeLibConverter.cs(22,2,22,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\BIND_OPTS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIBindCtx.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIConnectionPointContainer.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIConnectionPoint.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIEnumerable.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIEnumerator.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIEnumMoniker.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\CONNECTDATA.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIEnumConnections.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIEnumConnectionPoints.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIEnumString.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIEnumVARIANT.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIExpando.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\FILETIME.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIMoniker.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIPersistFile.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIReflect.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIRunningObjectTable.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\STATSTG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMIStream.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\DESCKIND.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\BINDPTR.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMITypeComp.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TYPEKIND.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TYPEFLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\IMPLTYPEFLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TYPEATTR.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\FUNCDESC.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\IDLFLAG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\IDLDESC.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\PARAMFLAG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\PARAMDESC.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TYPEDESC.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ELEMDESC.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\VARDESC.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\DISPPARAMS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\EXCEPINFO.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\FUNCKIND.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\INVOKEKIND.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\CALLCONV.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\FUNCFLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\VARFLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMITypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\SYSKIND.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\LIBFLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TYPELIBATTR.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\UCOMITypeLib.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\Architecture.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\OSPlatform.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\RuntimeInformation.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComEventsHelper.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComEventsInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComEventsMethod.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComEventsSink.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\NativeMethods.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\Variant.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_AssemblyBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_ConstructorBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_CustomAttributeBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_EnumBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_EventBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_FieldBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_ILGenerator.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_LocalBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_MethodBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_MethodRental.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_ModuleBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_ParameterBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_PropertyBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_SignatureHelper.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\_TypeBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\BIND_OPTS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IBindCtx.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IConnectionPointContainer.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IConnectionPoint.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IEnumerable.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IEnumerator.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IEnumMoniker.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\CONNECTDATA.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IEnumConnections.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IEnumConnectionPoints.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IEnumString.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IEnumVARIANT.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IExpando.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\FILETIME.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IMoniker.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IPersistFile.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IReflect.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IRunningObjectTable.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\STATSTG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IStream.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\DESCKIND.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\BINDPTR.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\ITypeComp.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\TYPEKIND.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\TYPEFLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IMPLTYPEFLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\TYPEATTR.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\FUNCDESC.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IDLFLAG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\IDLDESC.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\PARAMFLAG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\PARAMDESC.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\TYPEDESC.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\ELEMDESC.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\VARKIND.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\VARDESC.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\DISPPARAMS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\EXCEPINFO.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\FUNCKIND.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\INVOKEKIND.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\CALLCONV.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\FUNCFLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\VARFLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\ITypeInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\SYSKIND.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\LIBFLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\TYPELIBATTR.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\ITypeLib.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\ITypeLib2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\ComTypes\ITypeInfo2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\DefaultInterfaceAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\WindowsRuntimeImportAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\InterfaceImplementedInVersionAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ReadOnlyArrayAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\WriteOnlyArrayAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ReturnValueNameAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ConstantSplittableMap`2.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\DictionaryKeyCollection`2.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\DictionaryKeyEnumerator`2.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\DictionaryValueCollection`2.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\DictionaryValueEnumerator`2.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\EnumerableToIterableAdapter.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\EnumerableToBindableIterableAdapter.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\EnumeratorToIteratorAdapter`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\VectorToListAdapter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\VectorToCollectionAdapter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\VectorViewToReadOnlyCollectionAdapter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\MapToDictionaryAdapter.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\MapToCollectionAdapter.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\MapViewToReadOnlyCollectionAdapter.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ListToVectorAdapter.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\DictionaryToMapAdapter.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\BindableVectorToListAdapter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\BindableVectorToCollectionAdapter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ListToBindableVectorAdapter.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ListToBindableVectorViewAdapter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\EventRegistrationToken.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\EventRegistrationTokenTable`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IActivationFactory.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IRestrictedErrorInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IMapViewToIReadOnlyDictionaryAdapter.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ReadOnlyDictionaryKeyCollection`2.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ReadOnlyDictionaryKeyEnumerator`2.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ReadOnlyDictionaryValueCollection`2.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ReadOnlyDictionaryValueEnumerator`2.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\Indexer_Get_Delegate`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IVectorViewToIReadOnlyListAdapter.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IReadOnlyDictionaryToIMapViewAdapter.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IReadOnlyListToIVectorViewAdapter.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\GetEnumerator_Delegate`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IterableToEnumerableAdapter.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\BindableIterableToEnumerableAdapter.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IteratorToEnumeratorAdapter`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IManagedActivationFactory.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ManagedActivationFactory.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\HSTRING_HEADER.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\UnsafeNativeMethods.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\PropertyType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\WindowsRuntimeMarshal.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\WindowsRuntimeMetadata.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\NamespaceResolveEventArgs.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\DesignerNamespaceResolveEventArgs.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IClosable.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IDisposableToIClosableAdapter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IClosableToIDisposableAdapter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IStringable.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IStringableHelper.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\RuntimeClass.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\CLRIPropertyValueImpl.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\CLRIReferenceImpl`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\CLRIReferenceArrayImpl`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IReferenceFactory.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IPropertyValue.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\Point.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\Size.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\Rect.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IReference`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IReferenceArray`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\WindowsFoundationEventHandler`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ICustomPropertyProvider.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ICustomPropertyProviderImpl.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\InterfaceForwardingSupport.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IGetProxyTarget.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ICustomPropertyProviderProxy`2.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\ICustomProperty.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\CustomPropertyImpl.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IWinRTClassActivator.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\WinRTClassActivator.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\WindowsRuntimeBufferHelper.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IIterable`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IBindableIterable.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IIterator`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IBindableIterator.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IVector`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IVector_Raw`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IVectorView`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IBindableVector.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IBindableVectorView.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IMap`2.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IMapView`2.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\IKeyValuePair`2.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\WindowsRuntime\CLRIKeyValuePairImpl`2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TCEAdapterGen\EventProviderWriter.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TCEAdapterGen\EventSinkHelperWriter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TCEAdapterGen\EventItfInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TCEAdapterGen\NameSpaceExtractor.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\TCEAdapterGen\TCEAdapterGenerator.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\InteropServices\Expando\IExpando.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\DesignerServices\WindowsRuntimeDesignerContext.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\ConstrainedExecution\CriticalFinalizerObject.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\ConstrainedExecution\Consistency.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\ConstrainedExecution\Cer.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\ConstrainedExecution\ReliabilityContractAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\ConstrainedExecution\PrePrepareMethodAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\FormatterConverter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\FormatterServices.cs(22,2,22,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SurrogateForCyclicalReference.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\IDeserializationCallback.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\IFormatter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\IFormatterConverter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\IObjectReference.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\ISerializable.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\ISerializationSurrogate.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\ISurrogateSelector.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\MemberHolder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\OptionalFieldAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\OnSerializingAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\OnSerializedAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\OnDeserializingAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\OnDeserializedAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SerializationBinder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SerializationException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SerializationFieldInfo.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SerializationInfo.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SerializationEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SerializationInfoEnumerator.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\StreamingContext.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\StreamingContextStates.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\DeserializationEventHandler.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SerializationEventHandler.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatter.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\ObjectCloneHelper.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\ObjectIDGenerator.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\ObjectManager.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\ObjectHolder.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\FixupHolder.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\FixupHolderList.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\LongList.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\ObjectHolderList.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\ObjectHolderListEnumerator.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\TypeLoadExceptionHolder.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SafeSerializationEventArgs.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\ISafeSerializationData.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SafeSerializationManager.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SerializationObjectManager.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SerializationEvents.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SerializationEventsCache.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SurrogateSelector.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SurrogateKey.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\SurrogateHashtable.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\ValueTypeFixupInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\FormatterTypeStyle.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\FormatterAssemblyStyle.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\TypeFilterLevel.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\ISoapMessage.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\IFieldInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\InternalRM.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\InternalST.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\SerTrace.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\SoapMessage.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\SoapFault.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\ServerFault.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryHeaderEnum.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryTypeEnum.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryArrayTypeEnum.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\InternalSerializerTypeE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\InternalElementTypeE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\InternalParseTypeE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\InternalObjectTypeE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\InternalObjectPositionE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\InternalArrayTypeE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\InternalMemberTypeE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\InternalMemberValueE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\InternalParseStateE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\InternalPrimitiveTypeE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\MessageEnum.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\ValueFixupEnum.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\InternalNameSpaceE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\SoapAttributeType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryFormatter.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\__BinaryParser.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\__BinaryWriter.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\ObjectMapInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryConverter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\IOUtil.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryUtil.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\IStreamable.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryAssemblyInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\SerializationHeaderRecord.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryAssembly.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryCrossAppDomainAssembly.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryObject.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryMethodCall.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryMethodReturn.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryObjectString.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryCrossAppDomainString.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryCrossAppDomainMap.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\MemberPrimitiveTyped.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryObjectWithMap.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryObjectWithMapTyped.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryArray.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\MemberPrimitiveUnTyped.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\MemberReference.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\ObjectNull.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\MessageEnd.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\ObjectMap.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\ObjectProgress.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\ParseRecord.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\SerStack.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\SizedArray.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\IntSizedArray.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\NameCache.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\ValueFixup.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\InternalFE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\NameInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\PrimitiveArray.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\ObjectReader.cs(20,2,20,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\ObjectWriter.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\Converter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\WriteObjectInfo.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\ReadObjectInfo.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\SerObjectInfoInit.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\SerObjectInfoCache.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\TypeInformation.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryMethodCallMessage.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Serialization\Formatters\Binary\BinaryMethodReturnMessage.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\ExceptionServices\HandleProcessCorruptedStateExceptionsAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\ExceptionServices\FirstChanceExceptionEventArgs.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\ExceptionServices\ExceptionDispatchInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\IObjectHandle.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\__HResults.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\WellKnownObjectMode.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\DomainSpecificRemotingData.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\RemotingConfigHandler.cs(21,2,21,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\DelayLoadClientChannelEntry.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Identity.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\IdOps.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\DuplicateIdentityOption.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\IdentityHolder.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\IRemotingTypeInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\IChannelInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\IEnvoyInfo.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\TypeInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\DynamicTypeInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\ChannelInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\EnvoyInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\ObjRef.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\RedirectionProxy.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\ComRedirectionProxy.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\RemotingConfiguration.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\TypeEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\ActivatedClientTypeEntry.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\ActivatedServiceTypeEntry.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\WellKnownClientTypeEntry.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\WellKnownServiceTypeEntry.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\RemoteAppEntry.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\CustomErrorsModes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\RemotingException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\ServerException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\RemotingTimeoutException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\RemotingServices.cs(29,2,29,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\InternalRemotingServices.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\ServerIdentity.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\SoapServices.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\XmlNamespaceEncoder.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\ObjectHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\RemotingCachedData.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\RemotingFieldCachedData.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\RemotingParameterCachedData.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\RemotingTypeCachedData.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\RemotingMethodCachedData.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\SoapOption.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\XmlFieldOrderOption.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\SoapTypeAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\SoapMethodAttribute.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\SoapFieldAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\SoapParameterAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\SoapAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\ISoapXsd.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapDateTime.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapDuration.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapTime.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapDate.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapYearMonth.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapYear.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapMonthDay.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapDay.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapMonth.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapHexBinary.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapBase64Binary.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapInteger.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapPositiveInteger.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapNonPositiveInteger.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapNonNegativeInteger.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapNegativeInteger.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapAnyUri.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapQName.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapNotation.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapNormalizedString.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapToken.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapLanguage.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapName.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapIdrefs.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapEntities.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapNmtoken.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapNmtokens.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapNcName.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapId.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapIdref.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Metadata\W3cXsd2001\SoapEntity.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Proxies\ProxyAttribute.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Proxies\CallType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Proxies\RealProxyFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Proxies\MessageData.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Proxies\RealProxy.cs(22,2,22,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Proxies\RemotingProxy.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Proxies\AgileAsyncWorkerItem.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Proxies\__TransparentProxy.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Services\EnterpriseServicesHelper.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Services\ITrackingHandler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Services\TrackingServices.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\CrossContextDelegate.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\Context.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\CallBackHelper.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\ContextProperty.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\IContextAttribute.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\IContextProperty.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\IContextPropertyActivator.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\ContextAttribute.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\DynamicPropertyHolder.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\ArrayWithSize.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\IContributeClientContextSink.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\IContributeDynamicSink.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\IContributeEnvoySink.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\IContributeObjectSink.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\IContributeServerContextSink.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\IDynamicProperty.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\IDynamicMessageSink.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\SynchronizationAttribute.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\SynchronizedServerContextSink.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\WorkItem.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Contexts\SynchronizedClientContextSink.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Lifetime\ClientSponsor.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Lifetime\ILease.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Lifetime\ISponsor.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Lifetime\Lease.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Lifetime\LeaseSink.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Lifetime\LeaseManager.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Lifetime\LeaseState.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Lifetime\LifetimeServices.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Lifetime\LeaseLifeTimeServiceProperty.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\Perf_Contexts.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\ChannelServices.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\RemotingProfilerEvent.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\RegisteredChannel.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\RegisteredChannelList.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\ChannelServicesData.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\ServerAsyncReplyTerminatorSink.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IClientChannelSinkStack.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IClientResponseChannelSinkStack.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\ClientChannelSinkStack.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IServerChannelSinkStack.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IServerResponseChannelSinkStack.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\ServerChannelSinkStack.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\AsyncMessageHelper.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\CrossContextChannel.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\AsyncWorkItem.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\CrossAppDomainChannel.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\CrossAppDomainData.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\CrossAppDomainSink.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\ADAsyncWorkItem.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\CrossAppDomainSerializer.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\DispatchChannelSinkProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\DispatchChannelSink.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IChannel.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IChannelSender.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IChannelReceiver.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IChannelReceiverHook.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IClientChannelSinkProvider.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IServerChannelSinkProvider.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IClientFormatterSinkProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IServerFormatterSinkProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IClientChannelSink.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\ServerProcessing.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IServerChannelSink.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IChannelSinkBase.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IClientFormatterSink.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\IChannelDataStore.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\ChannelDataStore.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\ITransportHeaders.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\TransportHeaders.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\SinkProviderData.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\BaseChannelSinkWithProperties.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\BaseChannelWithProperties.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\BaseChannelObjectWithProperties.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\DictionaryEnumeratorByKeys.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\AggregateDictionary.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Channels\ISecurableChannel.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\AsyncResult.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\IInternalMessage.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\IMessage.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\IMessageCtrl.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\IMessageSink.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\IMethodMessage.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\IMethodCallMessage.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\IMethodReturnMessage.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\IRemotingFormatter.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\Message.cs(19,2,19,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ConstructorReturnMessage.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ConstructorCallMessage.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\CCMDictionary.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\CRMDictionary.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\MCMDictionary.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\MRMDictionary.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\MessageDictionary.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\MessageDictionaryEnumerator.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\StackBasedReturnMessage.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ReturnMessage.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\MethodCall.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ConstructionCall.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\MethodResponse.cs(19,2,19,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ISerializationRootObject.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\SerializationMonkey.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ConstructionResponse.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\TransitionCall.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ArgMapper.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ErrorMessage.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\InternalMessageWrapper.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\MethodCallMessageWrapper.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\MethodReturnMessageWrapper.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\MessageSmuggler.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\SmuggledObjRef.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\SmuggledMethodCallMessage.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\SmuggledMethodReturnMessage.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\OneWayAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\MessageSurrogateFilter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\RemotingSurrogateSelector.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\RemotingSurrogate.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ObjRefSurrogate.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\SoapMessageSurrogate.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\MessageSurrogate.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\StackBuilderSink.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\InternalSink.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\EnvoyTerminatorSink.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ClientContextTerminatorSink.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\AsyncReplySink.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ServerContextTerminatorSink.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\DisposeSink.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ServerObjectTerminatorSink.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ClientAsyncReplyTerminatorSink.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\Header.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\HeaderHandler.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\CallContext.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\ILogicalThreadAffinative.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\IllogicalCallContext.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\LogicalCallContext.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\CallContextSecurityData.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Messaging\CallContextRemotingData.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\ActivationServices.cs(19,2,19,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\LocalActivator.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\ActivationListener.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\AppDomainLevelActivator.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\ContextLevelActivator.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\ConstructionLevelActivator.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\RemotePropertyHolderAttribute.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\ActivationAttributeStack.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\IActivator.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\ActivatorLevel.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\IConstructionCallMessage.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\IConstructionReturnMessage.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\RemotingXmlConfigFileData.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\RemotingXmlConfigFileParser.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Remoting\Activation\UrlAttribute.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Hosting\ManifestRunner.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Hosting\ApplicationActivator.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Runtime\Hosting\ActivationArguments.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Configuration\Assemblies\AssemblyHash.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Configuration\Assemblies\AssemblyHashAlgorithm.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Configuration\Assemblies\AssemblyVersionCompatibility.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityElementType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\ISecurityElementFactory.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityElement.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityDocumentElement.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityDocument.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\XmlSyntaxException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\DynamicSecurityMethodAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SuppressUnmanagedCodeSecurityAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\UnverifiableCodeAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AllowPartiallyTrustedCallersAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PartialTrustVisibilityLevel.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityCriticalScope.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityCriticalAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityTreatAsSafeAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecuritySafeCriticalAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityTransparentAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityRuleSet.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityRulesAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\BuiltInPermissionSets.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\CodeAccessPermission.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PermissionType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\CodeAccessSecurityEngine.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\IEvidenceFactory.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\IPermission.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\ISecurityEncodable.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\ISecurityPolicyEncodable.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\IStackWalk.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\FrameSecurityDescriptor.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\FrameSecurityDescriptorWithResolver.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\HostSecurityManagerOptions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\HostSecurityManager.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\NamedPermissionSet.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PermissionSetEnumerator.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PermissionSetEnumeratorInternal.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SpecialPermissionSetFlag.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PermissionSet.cs(21,2,21,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PermissionTokenType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PermissionTokenKeyComparer.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PermissionToken.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PermissionTokenFactory.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PermissionSetTriple.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PermissionListSet.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PolicyManager.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\ReadOnlyPermissionSet.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\ReadOnlyPermissionSetEnumerator.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecureString.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SafeBSTRHandle.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityContextSource.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityContextDisableFlow.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\WindowsImpersonationFlowMode.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityContextSwitcher.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityContext.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityException.cs(19,2,19,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityState.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\HostProtectionException.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\PolicyLevelType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityManager.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityRuntime.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\SecurityZone.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\VerificationException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\EnvironmentPermissionAccess.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\EnvironmentStringExpressionSet.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\EnvironmentPermission.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\FileDialogPermissionAccess.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\FileDialogPermission.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\FileIOPermissionAccess.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\FileIOPermission.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\FileIOAccess.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\HostProtectionResource.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\HostProtectionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\HostProtectionPermission.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\IBuiltInPermission.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\BuiltInPermissionIndex.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\BuiltInPermissionFlag.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\IsolatedStorageContainment.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\IsolatedStoragePermission.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\IsolatedStorageFilePermission.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\PermissionState.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\SecurityAction.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\SecurityAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\CodeAccessSecurityAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\EnvironmentPermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\FileDialogPermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\FileIOPermissionAttribute.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\KeyContainerPermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\PrincipalPermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\ReflectionPermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\RegistryPermissionAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\SecurityPermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\UIPermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\ZoneIdentityPermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\StrongNameIdentityPermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\SiteIdentityPermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\UrlIdentityPermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\PublisherIdentityPermissionAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\IsolatedStoragePermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\IsolatedStorageFilePermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\PermissionSetAttribute.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\ReflectionPermissionFlag.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\ReflectionPermission.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\IDRole.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\PrincipalPermission.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\SecurityPermissionFlag.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\SecurityPermission.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\SiteIdentityPermission.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\StrongName2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\StrongNameIdentityPermission.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\StrongNamePublicKeyBlob.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\UIPermissionWindow.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\UIPermissionClipboard.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\UIPermission.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\UrlIdentityPermission.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\ZoneIdentityPermission.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\GacIdentityPermissionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\GacIdentityPermission.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\IUnrestrictedPermission.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\KeyContainerPermissionFlags.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\KeyContainerPermissionAccessEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\KeyContainerPermissionAccessEntryCollection.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\KeyContainerPermissionAccessEntryEnumerator.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\KeyContainerPermission.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\PublisherIdentityPermission.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\RegistryPermissionAccess.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Permissions\RegistryPermission.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CapiNative.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SafeCspHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SafeCspHashHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SafeCspKeyHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CipherMode.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\PaddingMode.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\KeySizes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CryptographicException.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CryptographicUnexpectedOperationException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\ICryptoTransform.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RandomNumberGenerator.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RNGCryptoServiceProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\Aes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\AsymmetricAlgorithm.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\AsymmetricKeyExchangeDeformatter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\AsymmetricKeyExchangeFormatter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\AsymmetricSignatureDeformatter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\AsymmetricSignatureFormatter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\FromBase64TransformMode.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\ToBase64Transform.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\FromBase64Transform.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CngHashAlgorithmFactory`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CryptoAPITransformMode.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CryptoAPITransform.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CspProviderFlags.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CspParameters.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CryptoConfig.cs(19,2,19,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CryptoStreamMode.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CryptoStream.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\DES.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\DESCryptoServiceProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\DeriveBytes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\DSAParameters.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\DSA.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\DSACspObject.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\DSACryptoServiceProvider.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\DSASignatureDeformatter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\DSASignatureFormatter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\HMAC.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\HMACMD5.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\HMACRIPEMD160.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\HMACSHA1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\HMACSHA256.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\HMACSHA384.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\HMACSHA512.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\HashAlgorithm.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\HashAlgorithmName.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\KeyNumber.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CspKeyContainerInfo.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\ICspAsymmetricAlgorithm.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\KeyedHashAlgorithm.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\MACTripleDES.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\TailStream.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\MD5.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\MD5CryptoServiceProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\MaskGenerationMethod.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\NativeHmac.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\PasswordDeriveBytes.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\PKCS1MaskGenerationMethod.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RC2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RC2CryptoServiceProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\Rfc2898DeriveBytes.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RIPEMD160.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RIPEMD160Managed.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAParameters.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSA.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSASignaturePadding.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSASignaturePaddingMode.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSACspObject.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSACryptoServiceProvider.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAEncryptionPadding.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAEncryptionPaddingMode.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAOAEPKeyExchangeDeformatter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAOAEPKeyExchangeFormatter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAPKCS1KeyExchangeDeformatter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAPKCS1KeyExchangeFormatter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAPKCS1SignatureDeformatter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAPKCS1SignatureFormatter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\Rijndael.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RijndaelManaged.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RijndaelManagedTransformMode.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RijndaelManagedTransform.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SafeProvHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SafeKeyHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SafeHashHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SHA1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SHA1CryptoServiceProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SHA1Managed.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SHA256.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SHA256Managed.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SHA384.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SHA384Managed.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SHA512.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SHA512Managed.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SignatureDescription.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAPKCS1SignatureDescription.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAPKCS1SHA1SignatureDescription.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAPKCS1SHA256SignatureDescription.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAPKCS1SHA384SignatureDescription.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\RSAPKCS1SHA512SignatureDescription.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\DSASignatureDescription.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\SymmetricAlgorithm.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\TripleDES.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\TripleDESCryptoServiceProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\CspAlgorithmType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\Constants.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\Utils.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\SafeCertContextHandle.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\SafeCertStoreHandle.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\X509Constants.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\OidGroup.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\OidKeyType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\CRYPT_OID_INFO.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\X509Utils.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\X509ContentType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\X509KeyStorageFlags.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\X509Certificate.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\IterationCountLimitEnforcer.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\Asn1Tag.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\AsnDecoder.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\AsnReader.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\AsnEncodingRules.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\AsnReaderOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\AsnValueReader.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\CryptographicOperations.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\Helpers.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\IncrementalHash.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\KdfWorkLimiter.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\Oids.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\PasswordBasedEncryption.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\Pbkdf2.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\OpenAlgorithmProviderFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\SafeBCryptAlgorithmHandle.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\AlgorithmIdentifierAsn.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\AttributeAsn.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\ContentInfoAsn.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\DigestInfoAsn.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\EncryptedContentInfoAsn.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\EncryptedDataAsn.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\EncryptedPrivateKeyInfoAsn.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\MacData.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\PBEParameter.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\PBES2Params.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\Pbkdf2Params.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\Pbkdf2SaltChoice.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\PfxAsn.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\Rc2CbcParameters.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\SafeBagAsn.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\Triple`3.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\Pkcs12Kdf.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\SetOfValueComparer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\ReadOnlySpan`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\Span`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\ReadOnlyMemory`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\SR.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\TagClass.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\UniversalTagNumber.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\Utility.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\BinaryPrimitives.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Cryptography\X509Certificates\CryptoPool.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Claims\Claim.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Claims\ClaimsIdentity.cs(18,2,18,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Claims\ClaimsPrincipal.cs(18,2,18,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Claims\ClaimTypes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Claims\ClaimValueTypes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Claims\RoleClaimProvider.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\InheritanceFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\PropagationFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AuditFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\SecurityInfos.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\ResourceType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AccessControlSections.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AccessControlActions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AceType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AceFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\GenericAce.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\KnownAce.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\CustomAce.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\CompoundAceType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\CompoundAce.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AceQualifier.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\QualifiedAce.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\CommonAce.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\ObjectAceFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\ObjectAce.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AceEnumerator.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\GenericAcl.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\RawAcl.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\CommonAcl.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\SystemAcl.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\DiscretionaryAcl.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\CryptoKeyRights.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\CryptoKeyAccessRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\CryptoKeyAuditRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\CryptoKeySecurity.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\EventWaitHandleRights.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\EventWaitHandleAccessRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\EventWaitHandleAuditRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\EventWaitHandleSecurity.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\FileSystemRights.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\FileSystemAccessRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\FileSystemAuditRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\FileSystemSecurity.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\FileSecurity.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\DirectorySecurity.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\MutexRights.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\MutexAccessRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\MutexAuditRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\MutexSecurity.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\NativeObjectSecurity.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AccessControlModification.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\ObjectSecurity.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AccessRule`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AuditRule`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\ObjectSecurity`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\CommonObjectSecurity.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\DirectoryObjectSecurity.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\Privilege.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\PrivilegeNotHeldException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\RegistryRights.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\RegistryAccessRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\RegistryAuditRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\RegistrySecurity.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AccessControlType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AuthorizationRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AccessRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\ObjectAccessRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AuditRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\ObjectAuditRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\AuthorizationRuleCollection.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\ControlFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\GenericSecurityDescriptor.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\RawSecurityDescriptor.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\CommonSecurityDescriptor.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\AccessControl\Win32.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\GenericIdentity.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\GenericPrincipal.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\IIdentity.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\IPrincipal.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\PrincipalPolicy.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\TokenAccessLevels.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\TokenImpersonationLevel.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\WindowsAccountType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\WinSecurityContext.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\ImpersonationQueryResult.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\WindowsIdentity.cs(22,2,22,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\KerbLogonSubmitType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\SecurityLogonType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\TokenType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\TokenInformationClass.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\WindowsImpersonationContext.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\WindowsBuiltInRole.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\WindowsPrincipal.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\IdentityReference.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\IdentityReferenceCollection.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\IdentityReferenceEnumerator.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\NTAccount.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\IdentifierAuthority.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\SidNameUse.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\WellKnownSidType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\SecurityIdentifier.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\PolicyRights.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\Win32.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Principal\IdentityNotMappedException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\AllMembershipCondition.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\AppDomainEvidenceFactory.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\ApplicationDirectory.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\ApplicationDirectoryMembershipCondition.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\ApplicationSecurityInfo.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\ApplicationSecurityManager.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\ApplicationVersionMatch.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\ApplicationTrust.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\ApplicationTrustCollection.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\ApplicationTrustEnumerator.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\AssemblyEvidenceFactory.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\IUnionSemanticCodeGroup.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\CodeGroup.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\CodeGroupPositionMarker.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\Evidence.cs(18,2,18,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\EvidenceBase.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\ILegacyEvidenceAdapter.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\LegacyEvidenceWrapper.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\LegacyEvidenceList.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\EvidenceTypeDescriptor.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\FileCodeGroup.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\FirstMatchCodeGroup.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\IIdentityPermissionFactory.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\IConstantMembershipCondition.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\IDelayEvaluatedEvidence.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\IMembershipCondition.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\IReportMatchMembershipCondition.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\IRuntimeEvidenceFactory.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\IApplicationTrustManager.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\TrustManagerUIContext.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\TrustManagerContext.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\CodeConnectAccess.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\NetCodeGroup.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\EvidenceTypeGenerated.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\PEFileEvidenceFactory.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\PermissionRequestEvidence.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\PolicyException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\ConfigId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\PolicyLevel.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\CodeGroupStackFrame.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\CodeGroupStack.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\PolicyStatementAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\PolicyStatement.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\Site.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\SiteMembershipCondition.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\StrongName.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\StrongNameMembershipCondition.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\UnionCodeGroup.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\Url.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\UrlMembershipCondition.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\Zone.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\ZoneMembershipCondition.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\GacInstalled.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\GacMembershipCondition.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\Hash.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\HashMembershipCondition.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\Publisher.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Policy\PublisherMembershipCondition.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\QuickCacheEntryType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\Config.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\Hex.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\SiteString.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\StringExpressionSet.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\TokenBasedSet.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\TokenBasedSetEnumerator.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\URLString.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\DirectoryString.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\LocalSiteString.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\XMLUtil.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\Parser.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\Tokenizer.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\TokenizerShortBlock.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\TokenizerStringBlock.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Security\Util\TokenizerStream.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Numerics\Hashing\HashHelpers.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\AbandonedMutexException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\AsyncLocal`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\IAsyncLocal.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\AsyncLocalValueChangedArgs`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\IAsyncLocalValueMap.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\AsyncLocalValueMap.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\AutoResetEvent.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SendOrPostCallback.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SynchronizationContextProperties.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\WinRTSynchronizationContextFactoryBase.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SynchronizationContext.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\CompressedStackSwitcher.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SafeCompressedStackHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\CompressedStack.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\DomainCompressedStack.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\EventResetMode.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\EventWaitHandle.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ContextCallback.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ExecutionContextSwitcher.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\AsyncFlowControl.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ExecutionContext.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Interlocked.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\HostExecutionContextSwitcher.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\HostExecutionContext.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\IUnknownSafeHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\HostExecutionContextManager.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\LockCookie.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\LockRecursionException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ManualResetEvent.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Monitor.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Mutex.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\NativeOverlapped.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\_IOCompletionCallback.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\OverlappedData.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Overlapped.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\PreAllocatedOverlapped.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadPoolBoundHandleOverlapped.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadPoolBoundHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\IDeferredDisposable.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\DeferredDisposableLifetime`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ParameterizedThreadStart.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\PinnableBufferCache.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Gen2GcCallback.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\PinnableBufferCacheEventSource.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ReaderWriterLock.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SemaphoreFullException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SynchronizationLockException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\InternalCrossContextDelegate.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadHelper.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadHandle.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Thread.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\StackCrawlMark.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadAbortException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadInterruptedException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadPoolGlobals.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadPoolWorkQueue.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadPoolWorkQueueThreadLocals.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\RegisteredWaitHandleSafe.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\RegisteredWaitHandle.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\WaitCallback.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\WaitOrTimerCallback.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\_ThreadPoolWaitCallback.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\IThreadPoolWorkItem.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\QueueUserWorkItemCallback.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\_ThreadPoolWaitOrTimerCallback.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\IOCompletionCallback.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadPool.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadPriority.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadStart.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadState.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadStateException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadStartException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Timeout.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\TimerCallback.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\TimerQueue.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\TimerQueueTimer.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\TimerHolder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Timer.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Volatile.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Volatile.cs(95,51,95,55): error CS1525: Invalid expression term 'long' 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Volatile.cs(95,56,95,57): error CS1525: Invalid expression term ')' 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Volatile.cs(95,58,95,67): error CS1003: Syntax error, ',' expected 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Volatile.cs(217,29,217,33): error CS1525: Invalid expression term 'long' 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Volatile.cs(217,34,217,35): error CS1525: Invalid expression term ')' 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Volatile.cs(217,36,217,45): error CS1003: Syntax error, ',' expected 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\WaitHandle.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\WaitHandleExtensions.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\WaitHandleCannotBeOpenedException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ApartmentState.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SpinLock.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SpinWait.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\PlatformHelper.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\TimeoutHelper.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\CountdownEvent.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\CdsSyncEtwBCLProvider.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\LazyThreadSafetyMode.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\LazyInitializer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\LazyHelpers`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ThreadLocal`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SystemThreading_ThreadLocalDebugView`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SemaphoreSlim.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\ManualResetEventSlim.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\CancellationTokenRegistration.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\CancellationTokenSource.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\CancellationCallbackCoreWorkArguments.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\CancellationCallbackInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SparselyPopulatedArray`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SparselyPopulatedArrayAddInfo`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\SparselyPopulatedArrayFragment`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\CancellationToken.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\Task`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\SystemThreadingTasks_FutureDebugView`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskFactory`1.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\GenericDelegateCache`2.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ParallelOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\Parallel.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\IndexRange.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\RangeWorker.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\RangeWorker.cs(54,43,54,46): error CS1525: Invalid expression term 'int' 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\RangeWorker.cs(54,47,54,48): error CS1525: Invalid expression term ')' 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\RangeWorker.cs(54,49,54,58): error CS1003: Syntax error, ',' expected 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\RangeManager.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ParallelLoopState.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ParallelLoopState32.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ParallelLoopState64.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ParallelLoopStateFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ParallelLoopStateFlags32.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ParallelLoopStateFlags64.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ParallelLoopResult.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\Shared`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskStatus.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\Task.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\CompletionActionInvoker.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\SystemThreadingTasks_TaskDebugView.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ParallelForReplicatingTask.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ParallelForReplicaTask.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskCreationOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\InternalTaskOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskContinuationOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\StackGuard.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\VoidTaskResult.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ITaskCompletionAction.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\UnwrapPromise`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ContinuationTaskFromTask.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ContinuationResultTaskFromTask`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ContinuationTaskFromResultTask`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ContinuationResultTaskFromResultTask`2.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskContinuation.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\StandardTaskContinuation.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\SynchronizationContextAwaitTaskContinuation.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskSchedulerAwaitTaskContinuation.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\AwaitTaskContinuation.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskCanceledException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskSchedulerException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskExceptionHolder.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskFactory.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskScheduler.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\SynchronizationContextTaskScheduler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\UnobservedTaskExceptionEventArgs.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ThreadPoolTaskScheduler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskCompletionSource`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\CausalityTraceLevel.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\AsyncCausalityStatus.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\CausalityRelation.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\CausalitySynchronousWork.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\AsyncCausalityTracer.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\ConcurrentExclusiveSchedulerPair.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\IProducerConsumerQueue`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\MultiProducerMultiConsumerQueue`1.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\SingleProducerSingleConsumerQueue`1.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\PaddingHelpers.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\PaddingFor32.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TplEtwProvider.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\BeginEndAwaitableAdapter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\Tasks\TaskToApm.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\NetCore\TimerQueue.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Threading\NetCore\TimerQueueTimer.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\CaseInsensitiveComparer.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\CaseInsensitiveHashCodeProvider.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\CollectionBase.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\DictionaryBase.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\ReadOnlyCollectionBase.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Queue.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\ArrayList.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\BitArray.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Stack.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Comparer.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\CompatibleComparer.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\ListDictionaryInternal.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\EmptyReadOnlyDictionaryInternal.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Hashtable.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\HashHelpers.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\DictionaryEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\ICollection.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\IComparer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\IDictionary.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\IDictionaryEnumerator.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\IEnumerable.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\IEnumerator.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\IEqualityComparer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\IHashCodeProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\IList.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\KeyValuePairs.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\SortedList.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\IStructuralEquatable.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\IStructuralComparable.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\StructuralComparisons.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\StructuralEqualityComparer.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\StructuralComparer.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\ObjectModel\Collection`1.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\ObjectModel\ReadOnlyCollection`1.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\ObjectModel\ReadOnlyDictionary`2.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\ObjectModel\ReadOnlyDictionaryHelpers.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\ObjectModel\KeyedCollection`2.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\Comparer`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\GenericComparer`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\NullableComparer`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\ObjectComparer`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\ComparisonComparer`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\Dictionary`2.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\EqualityComparer`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\GenericEqualityComparer`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\NullableEqualityComparer`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\ObjectEqualityComparer`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\ByteEqualityComparer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\EnumEqualityComparer`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\SByteEnumEqualityComparer`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\ShortEnumEqualityComparer`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\LongEnumEqualityComparer`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\RandomizedStringEqualityComparer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\RandomizedObjectEqualityComparer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\Mscorlib_CollectionDebugView`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\Mscorlib_DictionaryKeyCollectionDebugView`2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\Mscorlib_DictionaryValueCollectionDebugView`2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\Mscorlib_DictionaryDebugView`2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\Mscorlib_KeyedCollectionDebugView`2.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\ICollection`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\IComparer`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\IDictionary`2.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\IEnumerable`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\IEnumerator`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\IEqualityComparer`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\IList`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\IReadOnlyCollection`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\IReadOnlyList`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\IReadOnlyDictionary`2.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\KeyNotFoundException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\KeyValuePair`2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\List`1.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\IArraySortHelper`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\IntrospectiveSortUtilities.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\ArraySortHelper`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\GenericArraySortHelper`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\IArraySortHelper`2.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\ArraySortHelper`2.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Generic\GenericArraySortHelper`2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Concurrent\ConcurrentStack`1.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Concurrent\IProducerConsumerCollection`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Concurrent\SystemCollectionsConcurrent_ProducerConsumerCollec`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Concurrent\CDSCollectionETWBCLProvider.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Concurrent\ConcurrentDictionary`2.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Concurrent\ConcurrentQueue`1.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Concurrent\VolatileBool.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Concurrent\Partitioner`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Concurrent\OrderablePartitioner`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Concurrent\EnumerablePartitionerOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Collections\Concurrent\Partitioner.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CerHashtable`2.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\__Filters.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AmbiguousMatchException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ModuleResolveEventHandler.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Assembly.cs(19,2,19,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\LoadContext.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\RuntimeAssembly.cs(23,2,23,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyCopyrightAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyTrademarkAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyProductAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyCompanyAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyDescriptionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyTitleAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyConfigurationAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyDefaultAliasAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyInformationalVersionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyFileVersionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyCultureAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyVersionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyKeyFileAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyDelaySignAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyAlgorithmIdAttribute.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyFlagsAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyMetadataAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblySignatureKeyAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyKeyNameAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyName.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyNameProxy.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyNameFlags.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\AssemblyContentType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ProcessorArchitecture.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Associates.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CustomAttributeExtensions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CustomAttributeFormatException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Binder.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\BindingFlags.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CallingConventions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ConstructorInfo.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\RuntimeConstructorInfo.cs(19,2,19,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CustomAttributeData.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CustomAttributeNamedArgument.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CustomAttributeTypedArgument.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CustomAttributeRecord.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CustomAttributeEncoding.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CustomAttributeEncodedArgument.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CustomAttributeNamedParameter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CustomAttributeCtorParameter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\SecurityContextFrame.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CustomAttributeType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CustomAttribute.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\PseudoCustomAttribute.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\DefaultMemberAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\EventAttributes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\EventInfo.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\RuntimeEventInfo.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\FieldAttributes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\FieldInfo.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\RuntimeFieldInfo.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\RtFieldInfo.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MdFieldInfo.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\GenericParameterAttributes.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ICustomAttributeProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\IReflectableType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\IntrospectionExtensions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\RuntimeReflectionExtensions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\InterfaceMapping.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\InvalidFilterCriteriaException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\IReflect.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\LoaderAllocatorScout.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\LoaderAllocator.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ManifestResourceInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ResourceLocation.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MdConstant.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\CorElementType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MdSigCallingConvention.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\PInvokeAttributes.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MethodSemanticsAttributes.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MetadataTokenType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ConstArray.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MetadataToken.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MetadataEnumResult.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MetadataImport.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MetadataException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MemberFilter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MemberInfo.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MemberInfoSerializationHolder.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MemberTypes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MethodAttributes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\INVOCATION_FLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MethodBase.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MethodImplAttributes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MethodInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\RuntimeMethodInfo.cs(20,2,20,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Missing.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\PortableExecutableKinds.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ImageFileMachine.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Module.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\RuntimeModule.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ObfuscateAssemblyAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ObfuscationAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ExceptionHandlingClauseOptions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ExceptionHandlingClause.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\MethodBody.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\LocalVariableInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ParameterAttributes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ParameterInfo.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\RuntimeParameterInfo.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ParameterModifier.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Pointer.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\PropertyAttributes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\PropertyInfo.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\RuntimePropertyInfo.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ReflectionContext.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ReflectionTypeLoadException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\ResourceAttributes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\StrongNameKeyPair.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\TargetException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\TargetInvocationException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\TargetParameterCountException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\TypeAttributes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\TypeDelegator.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\TypeFilter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\TypeInfo.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\DynamicAssemblyFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\InternalAssemblyBuilder.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\AssemblyBuilder.cs(20,2,20,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\AssemblyBuilderData.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\ResWriterData.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\NativeVersionInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\AssemblyBuilderAccess.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\TypeNameBuilder.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\ConstructorBuilder.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\DynamicILGenerator.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\DynamicResolver.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\DynamicILInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\DynamicScope.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\GenericMethodInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\GenericFieldInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\VarArgMethod.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\DynamicMethod.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\EventBuilder.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\EventToken.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\FieldBuilder.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\FieldToken.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\ILGenerator.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\__FixupData.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\__ExceptionInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\ScopeAction.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\ScopeTree.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\LineNumberInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\REDocument.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\Label.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\LocalBuilder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\MethodBuilder.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\LocalSymInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\ExceptionHandler.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\MethodBuilderInstantiation.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\TypeKind.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\SymbolType.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\SymbolMethod.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\CustomAttributeBuilder.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\MethodRental.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\MethodToken.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\InternalModuleBuilder.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\ModuleBuilder.cs(18,2,18,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\ModuleBuilderData.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\PEFileKinds.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\OpCodeValues.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\OpCodes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\OpCode.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\OpCodeType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\StackBehaviour.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\OperandType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\FlowControl.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\ParameterBuilder.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\ParameterToken.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\PropertyBuilder.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\PropertyToken.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\SignatureHelper.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\SignatureToken.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\StringToken.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\PackingSize.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\TypeBuilder.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\TypeBuilderInstantiation.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\GenericTypeParameterBuilder.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\EnumBuilder.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\TypeToken.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\MethodOnTypeBuilderInstantiation.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\ConstructorOnTypeBuilderInstantiation.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\FieldOnTypeBuilderInstantiation.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Reflection\Emit\UnmanagedMarshal.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\__ConsoleStream.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\__Error.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\__HResults.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\BinaryReader.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\BinaryWriter.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\BufferedStream.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\Directory.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\Directory.cs(167,10,167,38): error CS1525: Invalid expression term 'ref' 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\DirectoryInfo.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\SearchOption.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\DirectoryNotFoundException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\DriveType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\DriveInfo.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\DriveNotFoundException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\EndOfStreamException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\File.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileAccess.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileInfo.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileLoadException.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileMode.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileNotFoundException.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileOptions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileSecurityStateAccess.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileShare.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileStreamAsyncResult.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileStream.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileSystemEnumerableFactory.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\Iterator`1.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileSystemEnumerableIterator`1.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\SearchResultHandler`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\StringResultHandler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileInfoResultHandler.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\DirectoryInfoResultHandler.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileSystemInfoResultHandler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileSystemInfo.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\FileAttributes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IOException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\LongPathHelper.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\MemoryStream.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\Path.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\PathHelper.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\PathInternal.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\PathTooLongException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\PinnedBufferMemoryStream.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\ReadLinesIterator.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\SeekOrigin.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\Stream.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\StreamReader.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\StreamWriter.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\StringReader.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\StringWriter.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\TextReader.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\TextWriter.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\UnmanagedMemoryAccessor.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\UnmanagedMemoryStream.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\UnmanagedMemoryStreamWrapper.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\LongPath.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\LongPathFile.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\LongPathDirectory.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\LongPathDirectory.cs(65,10,65,38): error CS1525: Invalid expression term 'ref' 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\IsolatedStorageScope.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\IsolatedStorage.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\IsolatedStorageFileStream.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\IsolatedStorageException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\IsolatedStorageSecurityOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\IsolatedStorageSecurityState.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\INormalizeForIsolatedStorage.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\IsolatedStorageFile.cs(22,2,22,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\IsolatedStorageFileEnumerator.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\SafeIsolatedStorageFileHandle.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\TwoPaths.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\TwoLevelFileEnumerator.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\IO\IsolatedStorage\__HResults.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Assert.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\AssertFilter.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\DefaultFilter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\AssertFilters.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\ConditionalAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Debugger.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\DebuggerStepThroughAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\DebuggerStepperBoundaryAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\DebuggerHiddenAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\DebuggerNonUserCodeAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\DebuggableAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\DebuggerBrowsableState.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\DebuggerBrowsableAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\DebuggerTypeProxyAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\DebuggerDisplayAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\DebuggerVisualizerAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\ICustomDebuggerNotification.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\LogMessageEventHandler.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\LogSwitchLevelHandler.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Log.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\LoggingLevels.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\LogSwitch.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\StackFrameHelper.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\StackTrace.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\StackFrame.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\EditAndContinueHelper.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\CodeAnalysis\SuppressMessageAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\ISymbolBinder.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\ISymbolBinder1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\ISymbolDocument.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\ISymbolDocumentWriter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\ISymbolMethod.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\ISymbolNamespace.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\ISymbolReader.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\ISymbolScope.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\ISymbolVariable.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\ISymbolWriter.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\SymAddressKind.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\SymDocumentType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\SymLanguageType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\SymLanguageVendor.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\SymbolStore\SymbolToken.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\PureAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractClassAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractClassForAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractInvariantMethodAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractReferenceAssemblyAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractRuntimeIgnoredAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractVerificationAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractPublicPropertyNameAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractArgumentValidatorAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractAbbreviatorAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractOptionAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\Contract.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractFailureKind.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractFailedEventArgs.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\ContractException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Contracts\Internal\ContractHelper.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\ActivityTracker.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventActivityOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventDescriptor.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\ControllerCommand.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventProvider.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventSource.cs(23,2,23,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventSourceSettings.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventListener.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventCommandEventArgs.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventSourceCreatedEventArgs.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventWrittenEventArgs.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventSourceAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\NonEventAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventChannelAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventChannelType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventCommand.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\ActivityFilter.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EtwSession.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\SessionMask.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventDispatcher.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventManifestOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\ManifestBuilder.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\ManifestEnvelope.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventSourceException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\FrameworkEventSource.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventLevel.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventTask.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventOpcode.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventChannel.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventKeywords.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\ArrayTypeInfo`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\ConcurrentSet`2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\ConcurrentSetItem`2.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\DataCollector.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\DataCollector.cs(48,55,48,85): error CS1525: Invalid expression term 'ref' 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EmptyStruct.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EnumerableTypeInfo`2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EnumHelper`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventDataAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventFieldTags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventFieldAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventFieldFormat.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventIgnoreAttribute.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventPayload.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventSourceActivity.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventSourceOptions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\FieldMetadata.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\InvokeTypeInfo`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\NameInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\PropertyAccessor`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\NonGenericProperytWriter`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\StructPropertyWriter`2.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\ClassPropertyWriter`2.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\PropertyAnalysis.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\SimpleEventTypes`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\NullTypeInfo`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\BooleanTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\ByteTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\SByteTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\Int16TypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\UInt16TypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\Int32TypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\UInt32TypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\Int64TypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\UInt64TypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\IntPtrTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\UIntPtrTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\DoubleTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\SingleTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\CharTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\BooleanArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\ByteArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\SByteArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\Int16ArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\UInt16ArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\Int32ArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\UInt32ArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\Int64ArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\UInt64ArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\IntPtrArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\UIntPtrArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\CharArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\DoubleArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\SingleArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EnumByteTypeInfo`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EnumSByteTypeInfo`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EnumInt16TypeInfo`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EnumUInt16TypeInfo`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EnumInt32TypeInfo`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EnumUInt32TypeInfo`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EnumInt64TypeInfo`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EnumUInt64TypeInfo`1.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\StringTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\GuidTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\GuidArrayTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\DateTimeTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\DateTimeOffsetTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\TimeSpanTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\DecimalTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\KeyValuePairTypeInfo`2.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\NullableTypeInfo`1.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\Statics.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\TraceLoggingDataCollector.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\TraceLoggingDataType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\EventTags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\TraceLoggingEventTypes.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\TraceLoggingMetadataCollector.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\TraceLoggingTypeInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\TraceLoggingTypeInfo`1.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\TypeAnalysis.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Diagnostics\Tracing\Internal\Environment.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\StringBuilder.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\StringBuilderCache.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\ASCIIEncoding.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\BaseCodePageEncoding.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\CodePageEncoding.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\Decoder.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\DecoderNLS.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\InternalDecoderBestFitFallback.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\InternalDecoderBestFitFallbackBuffer.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\DecoderExceptionFallback.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\DecoderExceptionFallbackBuffer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\DecoderFallbackException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\DecoderFallback.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\DecoderFallbackBuffer.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\DecoderReplacementFallback.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\DecoderReplacementFallbackBuffer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\Encoder.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\EncoderNLS.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\InternalEncoderBestFitFallback.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\InternalEncoderBestFitFallbackBuffer.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\EncoderExceptionFallback.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\EncoderExceptionFallbackBuffer.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\EncoderFallbackException.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\EncoderFallback.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\EncoderFallbackBuffer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\EncoderReplacementFallback.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\EncoderReplacementFallbackBuffer.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\Encoding.cs(15,2,15,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\EncodingInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\EncodingNLS.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\EncodingProvider.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\ISCIIEncoding.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\Latin1Encoding.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\MLangCodePageEncoding.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\NormalizationForm.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\ExtendedNormalizationForms.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\Normalization.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\DBCSCodePageEncoding.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\SBCSCodePageEncoding.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\SurrogateEncoder.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\UnicodeEncoding.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\UTF7Encoding.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\UTF8Encoding.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\UTF32Encoding.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\GB18030Encoding.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\ISO2022Encoding.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Text\EUCJPEncoding.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\FastResourceComparer.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\__HResults.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\FileBasedResourceGroveler.cs(14,2,14,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\IResourceGroveler.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\IResourceReader.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\IResourceWriter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\ManifestBasedResourceGroveler.cs(19,2,19,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\MissingManifestResourceException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\MissingSatelliteAssemblyException.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\NeutralResourcesLanguageAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\ResourceFallbackManager.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\WindowsRuntimeResourceManagerBase.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\PRIExceptionInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\ResourceManager.cs(20,2,20,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\ResourceLocator.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\ResourceReader.cs(19,2,19,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\ResourceSet.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\ResourceTypeCode.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\ResourceWriter.cs(18,2,18,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\RuntimeResourceSet.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\SatelliteContractVersionAttribute.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Resources\UltimateResourceFallbackLocation.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\AppDomainSortingSetupInfo.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\BidiCategory.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\Calendar.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CalendarData.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CalendarAlgorithmType.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CalendarWeekRule.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CharUnicodeInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CompareOptions.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CompareInfo.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CultureInfo.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CultureNotFoundException.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CultureTypes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\DateTimeStyles.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\MonthNameStyles.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\DateTimeFormatFlags.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\DateTimeFormatInfo.cs(16,2,16,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\TokenHashValue.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\FORMATFLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CalendarId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\DateTimeFormatInfoScanner.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\DaylightTime.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\DaylightTimeStruct.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\DigitShapes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CodePageDataItem.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\EncodingTable.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\InternalEncodingDataItem.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\InternalCodePageDataItem.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\GlobalizationAssembly.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\GlobalizationExtensions.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\GregorianCalendar.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\GregorianCalendarTypes.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\EraInfo.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\GregorianCalendarHelper.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\HebrewCalendar.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\HijriCalendar.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\UmAlQuraCalendar.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\ChineseLunisolarCalendar.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\EastAsianLunisolarCalendar.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\JapaneseLunisolarCalendar.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\JulianCalendar.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\KoreanLunisolarCalendar.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\PersianCalendar.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CalendricalCalculationsHelper.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\TaiwanLunisolarCalendar.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\IdnMapping.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\JapaneseCalendar.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\KoreanCalendar.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\RegionInfo.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\SortKey.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\StringInfo.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\TaiwanCalendar.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\TextElementEnumerator.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\TextInfo.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\ThaiBuddhistCalendar.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\TimeSpanFormat.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\TimeSpanStyles.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\TimeSpanParse.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\NumberFormatInfo.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\NumberStyles.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\UnicodeCategory.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\CultureData.cs(17,2,17,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\HebrewNumberParsingContext.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\HebrewNumberParsingState.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\HebrewNumber.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Globalization\SortVersion.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\AnsiCharMarshaler.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\CSTRMarshaler.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\UTF8Marshaler.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\UTF8BufferMarshaler.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\BSTRMarshaler.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\VBByValStrMarshaler.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\AnsiBSTRMarshaler.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\WSTRBufferMarshaler.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\DateTimeNative.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\DateTimeOffsetMarshaler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\HStringMarshaler.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\ObjectMarshaler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\ValueClassMarshaler.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\DateMarshaler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\InterfaceMarshaler.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\UriMarshaler.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\EventArgsMarshaler.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\MngdNativeArrayMarshaler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\MngdSafeArrayMarshaler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\MngdHiddenLengthArrayMarshaler.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\MngdRefCustomMarshaler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\AsAnyMarshaler.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\NullableMarshaler.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\TypeNameNative.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\TypeKind.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\WinRTTypeNameConverter.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\SystemTypeMarshaler.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\HResultExceptionMarshaler.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\KeyValuePairMarshaler.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\NativeVariant.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\CleanupWorkListElement.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\CleanupWorkList.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\StubHelpers\StubHelpers.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\InternalApplicationIdentityHelper.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\InternalActivationContextHelper.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\ISection.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\ISectionWithStringKey.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\ISectionWithReferenceIdentityKey.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\ISectionEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IEnumUnknown.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\ICDF.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\BLOB.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IDENTITY_ATTRIBUTE.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\STORE_ASSEMBLY_STATUS_FLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\STORE_ASSEMBLY.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\STORE_ASSEMBLY_FILE_STATUS_FLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\STORE_ASSEMBLY_FILE.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\STORE_CATEGORY.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\STORE_CATEGORY_SUBCATEGORY.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\STORE_CATEGORY_INSTANCE.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\CATEGORY.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\CATEGORY_SUBCATEGORY.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\CATEGORY_INSTANCE.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IEnumSTORE_ASSEMBLY_INSTALLATION_REFERENCE.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IEnumSTORE_DEPLOYMENT_METADATA.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreDeploymentMetadataEnumeration.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IEnumSTORE_DEPLOYMENT_METADATA_PROPERTY.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreDeploymentMetadataPropertyEnumeration.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IEnumSTORE_ASSEMBLY.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreAssemblyEnumeration.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IEnumSTORE_ASSEMBLY_FILE.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreAssemblyFileEnumeration.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IEnumSTORE_CATEGORY.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreCategoryEnumeration.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IEnumSTORE_CATEGORY_SUBCATEGORY.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreSubcategoryEnumeration.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IEnumSTORE_CATEGORY_INSTANCE.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreCategoryInstanceEnumeration.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IReferenceIdentity.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IDefinitionIdentity.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IEnumIDENTITY_ATTRIBUTE.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IEnumDefinitionIdentity.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IEnumReferenceIdentity.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IDefinitionAppId.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IReferenceAppId.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IIDENTITYAUTHORITY_DEFINITION_IDENTITY_TO_TEXT_FLA.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IIDENTITYAUTHORITY_REFERENCE_IDENTITY_TO_TEXT_FLAG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IIDENTITYAUTHORITY_DOES_DEFINITION_MATCH_REFERENCE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IIdentityAuthority.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IAPPIDAUTHORITY_ARE_DEFINITIONS_EQUAL_FLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IAPPIDAUTHORITY_ARE_REFERENCES_EQUAL_FLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IAppIdAuthority.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\ISTORE_BIND_REFERENCE_TO_ASSEMBLY_FLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\ISTORE_ENUM_ASSEMBLIES_FLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\ISTORE_ENUM_FILES_FLAGS.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreOperationStageComponent.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreOperationStageComponentFile.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreApplicationReference.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreOperationPinDeployment.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreOperationUnpinDeployment.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreOperationInstallDeployment.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreOperationUninstallDeployment.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreOperationMetadataProperty.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreOperationSetDeploymentMetadata.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreOperationSetCanonicalizationContext.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreOperationScavenge.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreTransactionOperationType.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreTransactionOperation.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreTransactionData.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Store.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IStore_BindingResult_BoundVersion.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IStore_BindingResult.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IStore.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StoreTransaction.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IManifestParseErrorCallback.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IsolationInterop.cs(12,2,12,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IManifestInformation.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IActContext.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\StateManager_RunningState.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\IStateManager.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMSSECTIONID.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_ASSEMBLY_DEPLOYMENT_FLAG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_ASSEMBLY_REFERENCE_FLAG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_ASSEMBLY_REFERENCE_DEPENDENT_ASSEMBLY_FLAG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_FILE_FLAG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_ENTRY_POINT_FLAG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_COM_SERVER_FLAG.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_USAGE_PATTERN.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_SCHEMA_VERSION.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_FILE_HASH_ALGORITHM.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_TIME_UNIT_TYPE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_FILE_WRITABLE_TYPE.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_HASH_TRANSFORM.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CMS_HASH_DIGESTMETHOD.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\ICMS.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\MuiResourceIdLookupMapEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\MuiResourceIdLookupMapEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IMuiResourceIdLookupMapEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\MuiResourceTypeIdStringEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\MuiResourceTypeIdStringEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IMuiResourceTypeIdStringEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\MuiResourceTypeIdIntEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\MuiResourceTypeIdIntEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IMuiResourceTypeIdIntEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\MuiResourceMapEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\MuiResourceMapEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IMuiResourceMapEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\HashElementEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\HashElementEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IHashElementEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\FileEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\FileEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IFileEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\FileAssociationEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\FileAssociationEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IFileAssociationEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CategoryMembershipDataEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CategoryMembershipDataEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\ICategoryMembershipDataEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\SubcategoryMembershipEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\SubcategoryMembershipEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\ISubcategoryMembershipEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CategoryMembershipEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CategoryMembershipEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\ICategoryMembershipEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\COMServerEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\COMServerEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\ICOMServerEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\ProgIdRedirectionEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\ProgIdRedirectionEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IProgIdRedirectionEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CLRSurrogateEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CLRSurrogateEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\ICLRSurrogateEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\AssemblyReferenceDependentAssemblyEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\AssemblyReferenceDependentAssemblyEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IAssemblyReferenceDependentAssemblyEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\AssemblyReferenceEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\AssemblyReferenceEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IAssemblyReferenceEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\WindowClassEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\WindowClassEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IWindowClassEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\ResourceTableMappingEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\ResourceTableMappingEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IResourceTableMappingEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\EntryPointEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\EntryPointEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IEntryPointEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\PermissionSetEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\PermissionSetEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IPermissionSetEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\AssemblyRequestEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\AssemblyRequestEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IAssemblyRequestEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\DescriptionMetadataEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\DescriptionMetadataEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IDescriptionMetadataEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\DeploymentMetadataEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\DeploymentMetadataEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IDeploymentMetadataEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\DependentOSMetadataEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\DependentOSMetadataEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IDependentOSMetadataEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CompatibleFrameworksMetadataEntry.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CompatibleFrameworksMetadataEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\ICompatibleFrameworksMetadataEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\MetadataSectionEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\MetadataSectionEntryFieldId.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\IMetadataSectionEntry.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\System\Deployment\Internal\Isolation\Manifest\CmsUtils.cs(13,2,13,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Windows\Foundation\Diagnostics\IAsyncCausalityTracerStatics.cs(11,2,11,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Windows\Foundation\Diagnostics\ITracingStatusChangedEventArgs.cs(9,2,9,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Windows\Foundation\Diagnostics\TracingStatusChangedEventArgs.cs(10,2,10,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Windows\Foundation\Diagnostics\CausalityRelation.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Windows\Foundation\Diagnostics\CausalitySource.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Windows\Foundation\Diagnostics\CausalitySynchronousWork.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Windows\Foundation\Diagnostics\CausalityTraceLevel.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. 1>C:\Users\tigersusyt\Documents\cwack\OctoplusHuawei\Windows\Foundation\Diagnostics\AsyncCausalityStatus.cs(7,2,7,10): error CS8370: Feature 'nullable reference types' is not available in C# 7.3. Please use language version 8.0 or greater. ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== ========== Build completed at 6:28 PM and took 06.621 seconds ==========