More info available if needed
LOG SNIPPET

RLCraft V2.8.1
Trinkets and Baubles-1.12.2-0.28.1

Do you have any more information? Like what was going on prior to the crash?

Nvm, I Was able to reproduce the issue, foir now in the Config, Disable the leech effect from the Wither Ring, and that should prevent the issue from happening again, Until I can get a fix for it

Fixed as of 0.29