Playing with brother on a lan world. Today, have had crashes caused by sophisticated backpacks inception upgrade -now it crashes on startup every time.

If there is no direct fix, I would like to be able to be able to proceed playing by wiping playerdata or inventory containing the backpack if a way is known.
crash-2022-08-15_20.25.01-server.txt

Based on the crash log the backpack that was put in the main backpack has the same UUID as the main backpack causing endless loop when upgrades are run.

You can edit the backpack out of your player's inventory using NBT explorer in player dat file or you can also look into removing the incepted backpack in sophisticatedbackpacks.dat file.

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