System.Reflection.ReflectionTypeLoadException - Wrong package version

i got folowing error when i install the Microsoft.AspNetCore.SignalR.Client:

"Initializing plugins failed. [{ Type: "FileNotFoundException",Message: "Die Datei oder Assembly "Microsoft.Bcl.AsyncInterfaces,Version=1.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51"oder eine Abhängigkeit davon wurde nicht gefunden. Das System kann dieangegebene Datei nicht finden."

-> its a System.Reflection.ReflectionTypeLoadException

So i tried to redirect the version from 1.0.0.0 to 5.0.0.0 (last one is installed with the SignalR) in the exe.config:

<dependentAssembly><assemblyIdentity name="Microsoft.Bcl.AsyncInterfaces" publicKeyToken="cc7b13ffcd2ddd51"/><bindingRedirect oldVersion="0.0.0.0-65535.65535.65535.65535" newVersion="5.0.0.0" /></dependentAssembly>

But it also didnt work.

Everyone knows a solution or things to try out?

Best wishes!