exactly as tittle said

box was checked to play for single player world, when I started it had an error and said file was saved, then my world disappeared

never mind. world appeared on reload but still weird

https://mclo.gs/doCc7hg

When I try and start my world this shows and I have to reload minecraft for my world to show again

This is caused by a bug in TalkBubbles. I've opened an issue on their tracker: Globox1997/TalkBubbles#6
Until that's fixed, you'll have to uninstall it or disable Auto-Recording in the ReplayMod Settings and then manually Start the recording once you're in the word.

ok, thanks