TypeLoadException: Could not load type TaskAwaiter from System.Runtime

I am trying to generate a CSharp client for my asp.net core Web Api project. I added the “PublishWithAspNetCoreTargetManifest>false</PublishWithAspNetCoreTargetManifest>” to the csproj, which didnt work and then I compiled self contained via CLI. When generating output I get the following exception however:

Could not load type ‘System.Runtime.CompilerServices.TaskAwaiter`1’ from assembly 'System.Runtime, Version=4.0.0.0, Culture…

Server stack trace: at System.Reflection.CustomAttribute._CreateCaObject(RuntimeModule pModule, IRuntimeMethodInfo pCtor, Byte** ppBlob, Byte* pEndBlob, Int32* pcNamedArgs) at System.Reflection.CustomAttribute.CreateCaObject(RuntimeModule module, IRuntimeMethodInfo ctor, IntPtr& blob, IntPtr blobEnd, Int32& namedArgs) at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean isDecoratedTargetSecurityTransparent) at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeMethodInfo method, RuntimeType caType, Boolean inherit) at System.Attribute.GetCustomAttributes(MemberInfo element, Boolean inherit) at NSwag.SwaggerGeneration.WebApi.WebApiToSwaggerGenerator.<>c.<GetActionMethods>b__14_1(MethodInfo m) at System.Linq.Enumerable.<>c__DisplayClass6_01.<CombinePredicates>b__0(TSource x) at System.Linq.Enumerable.WhereArrayIterator1.MoveNext() at NSwag.SwaggerGeneration.WebApi.WebApiToSwaggerGenerator.<GenerateForControllerAsync>d__11.MoveNext()

Whats up here?

[RicoSuter]

Implementation: https://github.com/RSuter/NSwag/issues/953

[RicoSuter]

In v11.7 the annotations redirect is removed, you can use studio to create the nswag.json file and run it via cmd line and the core binaries.

I hope to find a solution for this so that it also works in a full .net process.