Errors in currently selected datapacks prevented the world from loading.

[Pharsi]

Hello

Logs: https://paste.ee/p/cHLGl

Its not a custom modpack, the name of the modpack is SteamPunk. I could create another world without problems. (btw. my datapacks folder is empty). It didn't crash. I quit the game and the next day when I try to get in my world I got this picture.
I would really appreciate your help

Edited March 29 by Pharsi
typo

[TileEntity]

The level.dat is broken

Backup and delete this file and rename level.dat_old to level.dat and test it again

[Pharsi]

Unfortunately, it doesn't work that way either.

[TileEntity]

Create a new world with the same settings (gamemode, gamerules etc) and copy the level.dat, level.dat_old and session.lock from the new world to the broken one - delete the new world and test the broken world again

[Pharsi]

This worked. I lost my stuff but I don't care. Thank you so much for your help!