As title suggests, when players enter the Nether, there servers are crashing. Reported this to BetterNether dev, and they mentioned that it was possibly due to Lithium on getChunkLithium

Steps to Reproduce:

1. Download Another Quality Modpack 2 (Server instance, not sure about Single Player. will test)
2. Enter Nether
3. Crash

Crash log: https://mclist.io/paste/bACRVdecwyrHVvpeTlr9XYkq6UgMRiNk5shxIeSnJ3Ue0g

I disabled lithium, players entered nether perfectly.

Highly doubt its c2me, it is not running in compatibility mode for BetterNether, meaning it does not interact with nether/betternether. only BetterEnd and Charm. Disabling lithium allowed players to enter the Nether, but if you really need me to disable C2me, I will.

If removing lithium fixes it, try adding mixin.world.chunk_access=false to the lithium config file

Update;

Player was able to enter nether immediately after starting server with Lithium disabled. 10 minutes later, a player entered a different portal, server crashed. Lithium still off, they built a new portal, and were able to enter.

I am now disabling C2ME, and enabling Lithium. will let you guys know what happens.

C2ME Compatibility Module Notice:
Contact C2ME before reporting to mod authors if you encountered issues with the following mods:

• [email protected]
• [email protected]
  You can try disabling compatibility modules for these mods in "c2me-compat.toml" and try reproduce again.
  Or try reproduce without C2ME.

Per your crash log... Can you reproduce this issue without C2ME installed?

And please try to reproduce this without lithium installed as well. Lithium often shows up in the stacktrace without actually being the reason

Discussed with one of the C2ME devs and after I re-enabled lithium and disabled c2me, it crashed. we both agreed that it is on fault of C2ME. they are going to update.