Can't Remove WWEE

[OKory]

I had originally been using WWOO and wanted to switch to WWEE. I had no issues until I began loading new chunks, which immediately crashes the world. Tried to then remove WWEE and switch back to WWOO, but when loading up the world, I get the "Errors in currently selected data packs" and can't access the world. The data packs folder is empty, and so far I haven't been able to find a fix. I have an older backup of the world, but if there's anyway to fix it, I'd appreciate any help.

Here's the crash report, if it helps.
crash-2024-03-31_19.33.33-server.txt

[Cristelknight999]

You can’t remove WWEE from a world. Mojank made it so, that you can’t really remove any biomes from a world. So the easiest solution would be using your backup. And I’m not totally sure how your crashlog happened.