Unknownreported this bug
Steps to reproduce
Using IRIS custom world gen and mythic mobs random spawns. The crash is completely random meaning it sometimes happens 2 hours after boot and sometimes 10+ hours after boot.
Current behavior
Random crash, that I think has to do with random spawning and using biome conditions. I am using iris plugin.
Server log file
Log file didn't save as it was a hard crash.
Debug log snippet
(hs_err log)