Describe the bug
Always let the client be crash.

Crash report
https://paste.ubuntu.com/p/QHnbg7sqg9/

To Reproduce
If applicable, the steps to reproduce the behavior:

1. Log in the Server
2. Be crash.

Screenshots
No.

Please complete the following information:

• Minecraft Version: 1.12.2
• Mod Version: 6.2.0