Info: TupleFactory does need .NET Framework for building.

Assets/Scripts/MMTServer/CommunicationProtocoll/TupleFactory.cs

@@ -23,6 +23,8 @@ public interface ITupleFactory
     public static class TupleFactory
     {
         // the dynamic module used to emit new types
+        //This code hast Build problems with for example .NET Standard 2.1:  private static readonly ModuleBuilder _module = AppDomain.CurrentDomain.DefineDynamicAssembly(new AssemblyName { Name = nameof(TupleFactory) }, AssemblyBuilderAccess.Run).DefineDynamicModule(nameof(TupleFactory), false);
+        //PLEASE USE .NET FRAMEWORK for building this script.
         private static readonly ModuleBuilder _module = AppDomain.CurrentDomain.DefineDynamicAssembly(new AssemblyName { Name = nameof(TupleFactory) }, AssemblyBuilderAccess.Run).DefineDynamicModule(nameof(TupleFactory), false);
 
         // the generic type definitions constructed so far