Custom Modpack - "Errors in currently selected data packs prevented the world from loading" because "Overworld settings missing"

Been fiddling with this for a while, my current issue now is that I can play for a bit but when I save and quit and try to join the world again later, with or without restarting the launcher, it doesn't let me join the world again for "Errors in currently selected data packs prevented the world from loading" and the log says "Overworld settings missing." I've found other references to this problem and tried several fixes, nothing has worked. It won't even let me run in safemode.

Deleting level.dat and renaming level.dat_old to level.dat didn't work.

There are no data packs in any folders, I've even tried deleting the data pack folders just in case. No results.


I've had this happen to multiple worlds so far with less than an hour of progress in them, and I don't have the ability to figure the issue out myself. I don't have and shaders, the full mod list is in the log (Part 1). Any help or suggestions would be greatly appreciated.



Size limit forced me to split up the log. (Mod List is near beginning in Part 1)

Part 1
https://pastebin.com/ydckBUEk

Part 2
https://pastebin.com/paC8z9i5

Part 3
https://pastebin.com/VEA92iK5