KeenyKermit

No i was just making some npcs and now its happening all the time and i cant do anything on my server I send my latest log to someone on the discord server and he didnt find anything strange.

So when i try to connect to the server, i join the server but i cant do anything. And after a few seconds i get kicked and i see this screen (look in files).This only happens with one server not with my other one. Can someone help me fix this