I corrupted my game

I used to use the gamemaker studio 2 desktop version of gamemaker in steam, but i recently bought an extension that only works in the newer version, so I've been working on this game for the past 2 months, and yesterday, I accidentaly opened the project with the steam version, it opened in read-only, so i quit because i didn't want to corrupt my files, and it asked me if i wanted to save or not, i didn't.

after that, the game couldn't compile, when I try to create new projects and add the...

I corrupted my game