Versions
Minecraft Version: 1.16.5
Minecraft Forge Version: 36.2.8
Mod Version: 2.0

Log files

crash-2021-10-31_12.22.46-server.txt

Describe the bug
Around 12% it crashes, every world I tried has this issue

Any ideas what the cause could be?

Yes that worked. Thanks

Do you have parallel generation activated?
If yes, try setting "max-tick-time" in the server.properties file to -1.
https://minecraft.fandom.com/wiki/Server.properties