Any time anyone encounters a Cavenic or Crazy Skeleton (regardless of dimension) as soon as it attempts to attack, the game (and server) crashes. If playing on Creative, there is no issues because the skeletons are not attempting to attack.
All potentially helpful version information
Minecraft 1.12.2
Forge 14.23.5.2838
Caverns II 1.12.2-v2.2.0
Bewitchment 1.12.2-0.0.20.8
Any time anyone encounters a Cavenic or Crazy Skeleton (regardless of dimension) as soon as it attempts to attack, the game (and server) crashes. If playing on Creative, there is no issues because the skeletons are not attempting to attack.
All potentially helpful version information Minecraft 1.12.2 Forge 14.23.5.2838 Caverns II 1.12.2-v2.2.0 Bewitchment 1.12.2-0.0.20.8
Crash Report: https://paste.ee/p/1MkwI
This issue also has been reported to the Bewitchment dev.