Adds additional AI patterns to mobs to make the game more challenging. 'Passive' mobs will fight back, monsters will break light sources and wooden doors, some mobs gain random extra abilities, and villages are more... village-y.
The logs appear to have expired, though the most recent version since this post may have fixed this issue. If it still happens with the latest version, please post a new issue here.
This crash happens during world-gen for both single player and server, but only servers give logs
https://paste.ee/p/Yct9B
From the above crash it mentions another mod, so I removed that mod to see if the issue is fixed, but it only leads to another mod being mentioned.
https://paste.ee/p/QsrDb
That made me think it's the problem with this mod, the version is the latest version for 1.16.5.