steps

Using this mod With Ars Noveau
Setup an essentials filter on a Imbuement Chamber
try to add a new spell to your spell book in a multiplayer locally hosted game

4. See error
   crash-2022-08-14_15.53.11-server.txt

Once the crash happens the save is unplayable. Any attempt to open it just crashes again.

Additional context [Optional]
Add any other context about the problem here.