So, I was playing the game the other night and when I tried to open my world, it's not opening and it was saying Invalid Region File Name and Incorrect File Header.. How do I recover my world?
window key +R(%AppData%), locate the game, click it, go to saves, open the world you want to fix, go to region, locate the files that's appearing incorrect or invalid on the game and delete the files then you'd be able to open your world again. That's what I did.