MODLOADER: Fabric
MOD VERSION: 1.21.1-10.1.17)

The client crashes when the mods Accessories (accessories-fabric-1.1.0-beta.33+1.21.1.jar) and JamLib (jamlib-fabric-1.3.2+1.20.1-patch.1.jar) are together in the MODs folder.

My goal was to use the Utility Belt and Traveler's Backpack MODs together on my Cobblemon server. The server starts normally with both, but not on the client.

I'm attaching his latest crash report.

crash-2025-03-21_14.07.19-client.txt

From the attached crash log it seems like you use forge not fabric and 1.20.1 not 1.21.1

Update travelers backpack to latest release for 1.20.1

Update accessories to latest version, the issue has been fixed in beta.34

if issue still occurs after updating accessories, open this issue again