I have a world and i need a backpack and your mod is really awsome, i downloaded your mod, the latest one, TravelersBackpack-1.16.4-5.3.6 i got the worning message from your mod with the warning, after that i tryed to load my world and i got this message screen "errors in currently selected datapacks prevented world from loading"
forge version 1.16.4-forge-35.1.36
debug.log
latest.log

no, i didn't modify any config files

Hmm, log says nothing about my mod, maybe your world got corrupted somehow? I'm sorry but you'll have to restore world from backup

Did you set curiosIntegration to true?