So when I stopped playing yesterday I exited the game normally and saved game. But when I tried to play today it said "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.". Which I don't understand because I have no data packs and the weird thing is, this isn't the first time this has happened. It did this to another world.