Minecraft Version

1.20.1

What happened?

I made a modpack with a friend. He wanted to connect to my world using Essential but he couldn't join. After a search, we have found out that this mod makes him immediately leave the game after joining.

How do you trigger this bug?

1. Download 1.20.1 Essential and 1.20.1 Polymorph
2. Make somebody do the same thing as in the 1. step.
3. Make a new world and host it by using Essential
4. Let the guy join to your world using Essential
5. The guy won't make it past loading world, you'll see he joins and immediately leaving him with error code on his screen

Loader

Forge

Loader Version

Forge 1.20.1 - 47.3.10

API Version

No response

Mod Version

polymorph-forge-0.49.5+1.20.1

Relevant Log Outputs

No response

Can you share the latest.log file where the error is shown?