The issue was originally thought to be HBM, but it isn't: Hamster-Systems/Hbm-s-Nuclear-Tech-GIT#27

Logs from players crashing on the server point to not-so-useful HBM most of the time:

crash-2023-11-12_16.39.58-client.txt.zip - From other users on server. Doesn't hold any useful information

latest.log.gz - Same user from above but .log. Reports blame HBM.

When B:"[1] Chunk Gen Limit Toggle" is set to true in the UniversalTweaks.cfg. In this private modpack, Entering a newly generated Twilight Forest causes a crash mainly blaming Gregtech: GregTechCEu/GregTech#2161

https://mclo.gs/hqFx7dY & https://mclo.gs/QiCdFhp - Single player crashes

Setting this value to false fixes the issue and players are allowed to enter The Twilight Forest in both the server and Single-player just fine.

Any ideas?