I have been grinding out this survival world for a while now and I worked really hard on building and getting a bunch of stuff and today, out of the blue I was on this world and the game froze. The only way to close it was by shutting off my computer or force quitting. I did nothing different while I was playing, it literally just crashed as I was running around. Now, every time I try to open this specific world it usually until 97% and then stops and freezes, and I can only close the game by force quitting. As a side note, I have no mods or additions to minecraft, I was just playing vanilla survival.