C# Visual Studio Code CS0579 (duplicate attribute) how to fix?

Question

C++ / C#

[assembly: global::System.Runtime.Versioning.TargetFrameworkAttribute(".NETCoreApp,Version=v3.1", FrameworkDisplayName = "")]

What am I missing? (For the first time I write something)

Answer 1

Hammer code not ide glitches of such plan happen. For example, ts is going to me after an idle run, it is extremely unpleasant. Especially when the client and server are in the same solution