after traveling a little, server would crash. Can relaunch server but once the same area was loaded it would crash again. I dont know if it is this mod, but this one is listed in the crashlog.
Version: RoguelikeDungeons-1.12.2-1.8.0.jar

crashlog: https://paste.dimdev.org/ebuboqadek.mccrash

Found it was caused by Recurrent Complex