I believe this is an issue from Hexerei because it's always Hexerei based structures that the witch spawns in for the server to crash.

Logs: https://mclo.gs/cuaQ4Mv#L5

I know it's the witch that crashes the server, I've deleted the witch but when the player joins it crashes with same issue, as if the witch spawns again or it wasn't actually deleted.

I use the /kill command with the type and x,y,z and it says the witch has been killed.

Server is running ATM8 1.0.22