✅ How to deserialize JSON in .NET when my base class is generic?

I have a concrete class,

ClientEventInfo

ClientEventInfo

derived from a generic. So I tried to deserialize a JSON file with

System.Text.Json.JsonSerializer.Deserialize<ClientEventInfo>("url")

System.Text.Json.JsonSerializer.Deserialize<ClientEventInfo>("url")

, but I get

System.TypeInitializationException

System.TypeInitializationException

. Seems the generic can't be initialized. Is there a way around it? I don't know what's going on here.