Describe the crash
The world crashes upon loading the twilight forest

To Reproduce
Steps to reproduce the behavior: enter into the portal to the twilight forest again

Crash Log
https://haste.antti.codes/kexowekipe.mccrash

Info (please complete the following information):

• Modpack Version: beta 4
• Server or Singleplayer: single player
• Version the world was created on: 1.12.2

Additional context

I have not been able to replicate this issue in either stable v.3.1.1a or stable v.3.0.1a.