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

Forge 47.3.33
Minecraft 1.20.1

crash-2025-02-27_23.32.25-client.txt

1. Describe the bug

Sometimes when opening the backpack using the assigned hotkey the game crashes and gives me the above mentioned info. I attached a detailed crash report.

2. Write steps to reproduce the bug

This happens ever since I have equipped my backpack in the accessory slot

3. What is expected behaviour

It is not expected to crash.

4. Screenshots (If applicable)

Not applicable imo, correct me if I am wrong please.

edit: backpack has the following attachments as can be seen in the screenshot:

and is upgraded to diamond tier.

Will you be able to export backpack item nbt data using the following mod and share it here?
https://www.curseforge.com/minecraft/mc-mods/nbtexporter

Do the following:

• Hold backpack in hand (Make sure autopickup upgrade is applied!)
• Write in chat /exportnbtstr
• Give me the file that it generated

https://www.curseforge.com/minecraft/mc-mods/travelers-backpack
Fixed in latest version

omg thank you. i was hoping to find some time to play this weekend but im glad you were able to figure it out. Sorry for responding so late...