0. ALWAYS PROVIDE INFORMATION ABOUT MODLOADER (Fabric / Forge) AND MOD VERSION (For Example 1.19.2-8.2.10)
   Minecraft 1.21.1
   Forge: Traveler's Backpack 1.21.1-10.0.1

1. Describe the bug
   Crafted and opened a Traveler's Backpack with right click. It disconnected me from the game and gave the error message:
   "Failed to decode packet 'clientbound/minecraft:container_set_content'"

2. Write steps to reproduce the bug
   Opened a fresh and empty Traveler's Backpack and it disconnected me from my server.

3. What is expected behaviour
   To open and use the Backback.

4. Screenshots (If applicable)
   VanillaTweaks_r640452_MC1.21.x.zip
   disconnect-2024-09-28_16.18.05-client.txt
   
   

Tested again after removing old player data and got this error instead:
disconnect-2024-09-28_21.31.17-client.txt