It says "Errors in currently selected datapacks prevented the world from loading"

The only datapacks loaded are what are in ATM, when I look at my folder, it says packmenu is outdated, but I cannot remove it from the resource packs folder in game.

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

same here :\