Describe the bug:
It doesn't matter what type of generation the world has: ModernBeta or from Minecraft, game crashes anyway.
Minecraft 1.16.5 works fine, though.

Steps to reproduce the behavior:

• First Step:
  Create new world or enter the existing one with mod installed
• Second Step:
  Wait for it to crash.
  Enviroment Info:
• Minecraft: 1.17
• Mod Loader: Fabric

Crash Report:
https://pastebin.com/cXx10281

Additional context:
I think this has to do something with (#2416 (comment))

This should hopefully be fixed.