Unity executable crashes but worked before

Hi, so I have this Unity game that is an executable that was been working perfectly in the past and I built it a couple a months ago and never rebuilt it. However whenever I try to run it now it crashes. What could be causing this? ,

Probably some error in the new build. Either:

  • Try to rebuild the game
  • Look at the console in the editor to see if it warns about the problem

But does it work completely fine in the editor?

I hope this helps,