I had no idea what happened. I was writing a piece of music on Musescore 3 and put a lot of work into it. Then I exited Musescore to search something up, and a few seconds later, Musescore crashed. I hadn't even clicked anything when it happened. So I reopened Musescore, and a box came up that said "Musecore didn't shut down correctly, would you like to restore your work" blah blah blah. I clicked yes, but then it came up with "couldn't open the file." Then it came up with the Start Centre, and my piece of music was nowhere to be seen. Basically all my hard work was lost. Can someone please do something about this?