Conflict being with 'The Bumblezone'

Farbic Version: 0.11.7
Optifabric Version: V1.11.20R
Optifine Version: 1.17.1 HD U G9

Log given:

The game crashed whilst unexpected error
Error: org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered
Exit Code: -1