When I was scrolling through my worlds, I found a world with no name, and when I clicked on it, there was only a about 150x150 world, that I could see. Sometimes, I randomly got damaged, and I also spawned where the blocks where invisible. Before I found it, I had uploaded 2 worlds in-game. The first world I uploaded was a FnaF world, which uploaded successfully, and the other one I uploaded, was a corrupted world I had been trying to fix for a while, which failed to upload (please help me fix this). I also notice that my FNaF world is not in the list.

Oh, and I just noticed my computer space is low...

Also, ignore the Five Nights At Freddy's world in Screenshot (62), that is one I made previously.