Bewitchment mod has an incompatibility that they say has to be fixed on your end.

Description:

Getting a crash with bewitchment-1.12.2-0.0.20.3 and Abyssalcraft with launching in SP.

Full Mod list: https://paste.dimdev.org/yamobucovu.md

Version of Minecraft, Bewitchment, Forge, Patchouli, and Baubles used
Forge 2838
Baubles-1.12-1.5.2
bewitchment-1.12.2-0.0.20.3
Patchouli-1.0-20
AbyssalCraft-1.12.2-1.9.10
AbyssalCraft Integration-1.12.2-1.8.1

Logs, in the event of a crash
https://paste.dimdev.org/kaloqodufe.mccrash

Link to Bewitchment issue report: Um-Mitternacht/Bewitchment#385

Ah, thanks!

Update AbyssalCraft Integration, this was fixed in 1.9.0.