It turns out that TexMaker, after compiling several times, crashes when I compile another one. First it appeared: "Error: file not found", and then TexMaker closes and then dozens of alerts of "Close Firefox" appear, and a tap with "Questions for Files" appears too. I haven't used TexMaker too much in this laptop, but I had never experienced this. When I try to compile a beamer, it's even worse: the whole laptop crashes, and lots of tabs with the "Questions for Files" appear. I add some screenshots.
I've recently installed (but I'd say TexMaker crashed before too) some
ubuntu-restricted-extras , exactally this, for Spotify , just in case it has something to do.
The laptop is a bit dizzy these days, maybe because of that or maybe this was caused by other thing (it didn't recognize my password once, it indicated 18 hours of battery life - whereas I only have around 3).
Thanks in advance