Upon launching with mods:
VanillaIcecreamFix version 1.1.8
Zenith version 0.1.3
FakerLib version 0.0.7
Zenith Attributes version 0.0.4
Get crash with error:
crash-report.txt
(using MixinTrace mod)

im guessing 1.20.1 as thats the max version for the other mod. You are missing Cloth-config as a dependency to make my mod work, please see if the same issue occurs. The game shouldve refused to load without Cloth-config. Also please send a full crash report next time. @CatGirlDShadow

Okay. Sorry for late answer.

Log with error
latest.log

Game version: 1.20.1
Fabric version: 0.14.24

Mods:
cloth-config-11.1.106-fabric.jar
fabric-api-0.90.4+1.20.1.jar
fakerlib-0.0.7.jar
VanillaIcecreamFix-1.1.8-beta.jar

Issue may be present with other mods by same author (dependants of FakerLib)
Zenith
Zenith Attributes

Hello, i am not getting the same crash, so i dont know if i could fix it. The crash I am getting seems the be with the fact we are both modifying the anvil class to avoid the 39 xp level cap. If i was to fix the error you are getting this error would probably occur, linking it to a similar issue to #10. For info about please read the bottom 2 comments. @CatGirlDShadow