I have been using this mod for several months with no issues on 1.16.4. Yesterday (7/02/21) the game suddenly crashed and will no longer allow me to open the world I was playing at the time (others open fine) unless i remove this particular mod from my mod folder. Each time I try to enter the world with this mod, the game becomes unresponsive on the loading screen, and then crashes. I get the same crash log each time. When I remove this mod the world loads without issue.

I have updated forge to 1.16.5 in the process of trying to solve the issue, as well as allocated more RAM. I have also updated to newest versions of the UTeamCore mod as well as Useful Backpacks. None of these changes have made a difference.

Original Crash:
crash-2021-02-07_22.37.56-server.txt
Latest attempt at loading the world:
crash-2021-02-08_12.51.56-server.txt

Versions

• Mod version: 1.16.4-1.11.6.86 AND 1.16.4-1.11.6.87
• Minecraft version: 1.16.4 AND 1.16.5
• Forge version: 1.16.4-35.1.13 AND 1.16.5-36.0.15
• UTeamCore version: 1.16.4-3.1.16.190 AND 1.16.4-3.1.17.192

I hope you can help - I would also like to know if I will have lost the contents of the bags I had previously, since I have changed versions and also loaded the world without the mod.

This is caused by a corrupted config file inside your world. Please delete the file usefulbackpacks-server.toml file inside your world/serverconfig folder.

Thank you for your quick response! Worked like a treat :) Sad that I've lost the contents but at least I can open my world and use the mod again haha