Hi, 2 days ago I started a world, I was just playing around. 

Today I was still playing, and since I haven't been really up to the latest minecraft stuff(1.13) I was messing around with commands, until I came up to /locate. I was just running around using /locate to find the buried treasures, the ones that are usually under sand or water or whatever.

It was all working fine until I located more and more, and my game just crashed. I get on my world, and after 5 seconds I just crash. I tried to backup, copy the world, in the copied world it still does the same thing.

I don't want to lose all my progress, does anyone know what should I do? 

(I'm new here so I apologize if this is not the correct place to discuss this)