InfinitezJoker

I tried adding the Ad Astra Mod, Queen Bee mod, The Lost Castle mod, and the Artifacts mod to my existing 1.20.1 Hardcore world that I started today. I joined my world to see if my world had taken a hit in the lag department, it wasn't lagging too bad but enough to make me remove Ad Astra to get Optifine back. I removed Ad Astra's support mods and added the preview for optifine 1.20.1.. I tried to load my world back up but it gave me the message of "Errors in currently selected data packs prevented the world from loading. You can either try to load it with only the vanilla data pack ("safe mode"), or go back to the title screen and fix it manually." I tried to remove the TLC, but after giving me the message again, I deleted the Patchouli support mod and the Lost Castle mod but again the same message. Tried removing the curios support for Artifacts and nothing changed. I decided to remove those 4 mods I had just added along with its support mods, and suprisingly nothing changed. Tried to remove the optifine too and nothing changed. Can anyone help me solve this?