Been having this problem for a year now. Every time I load up the game this pops up in the console and whenever I try to make a new world it crashes the game. I have been forced to play off of autosaves for over a year. Please help me, I'm actually begging at this point.

It says something is wrong(or maybe it's missing) with preview.png file. Did you copy save from internet?

Can you make a screenshot of a folder from a screenshot and preview.png?

You can also try to backup saves/ folder from your screenshot and delete it. And see if the game crashes after it