0. ALWAYS PROVIDE INFORMATION ABOUT MODLOADER (Fabric / Forge) AND MOD VERSION (For Example 1.19.2-8.2.10)

Game version:1.20.1
Forge version:47.3.0
Mod version: 9.1.23

1. Describe the bug
   Opening the backpack causes a crash.
   When the backpack was worn, placed on the ground, or held in hand, it crashed in all cases.

The following are the contents of the backpack, a video of the crash, and the crash report.

crash-2025-01-19_23.20.09-server.txt
crash-2025-01-19_23.20.13-client.txt

Can you join my discord and ping me? I will send updated file and you will check if issue is resolved

Thank you very much.