Error saving project, error opening the exported file, and error to export as STL

[leonardo.vercelli]

So I have been working on this project for a some hours, its a base plate from a 3D scan I did. Then this message that a automatic save couldn't be done so I better save my project. When I tried, this happens.

Now I'm stuck, I can't close fusion because nothing works to save the project, exporting it to STL doesn't work either. I don't want to lose all todays work.

Any suggestions??

[leonardo.vercelli]

Just to add, trying to save the PC crashed and lost all the work. Absolutly all of it