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1. Minecraft version:1.12.2
2. Galacticraft version: 1.12.2-4.0.4
3. GalaxySpace version: 1.12.2-2.0.19
4. AsmodeusCore version (for 2.0.1 version and above): 1.12.2-0.0.31
5. Side (Single player (SSP), Multiplayer (SMP), or SSP opened to LAN (LAN)): Multiplayer
6. Other add-ons:
   GalacticTweaks-1.7.2
   More-Planets-1.12.2-2.2.2-GC280

Description of the issue:
Random server crashes when players generate certain kind of chunks on IO

this has been an issue for at least a year just never got around to reporting it

Screenshot/Video:

Attached log file (or url on pastebin.com):

crash-2023-01-11_07.40.38-server.txt

a46cef3
will try fix in next verison