I have an error like tihs:

Failed to serialize System.Collections.Generic.List`1[[Server.Shared.Message, Server.Shared, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]] value.

From Unity and Server(.net8) both. I use [Union] for Polymorphism. My "Message" class from Shared Project like:

[Union(0, typeof(RegisterRequest))]
[Union(1, typeof(RegisterResponse))]
[Union(2, typeof(LoginRequest))]
[Union(3, typeof(LoginResponse))]
public abstract class Message { }

And all "Response" and "Request" inheriting from "Message" Class.

So when I try to serialize as List(), I always fail...

I want to send messages as list from an IL2CPP build. Also my server is AOT.