MC 1.21.1
Fabric 0.14.24
Mods
architectury-9.1.12-fabric
cloth-config-11.1.106-fabric
fabric-api-0.90.7+1.20.1
ForgeConfigAPIPort-v8.0.0-1.20.1-Fabric
majrusz-library-fabric-1.20.1-6.1.7
PuzzlesLib-v8.1.9-1.20.1-Fabric
RoughlyEnoughItems-12.0.674

crash-2023-11-22_21.03.46-client.txt

Previous version Majrusz library (majrusz-library-fabric-1.20.1-6.1.6) work fine:

latest.log

This is present on 1.19.*, as well. Might want to backport a fix there too.

Hello, thanks for the report, it got fixed with the latest 6.1.8 release