pages quit unexpectly
I have a MacBook Air and if I try to open "pages", it just says, "pages" quit unexpectedly, so there's some kind of problem, which I don't understand. The problem occured yesterday for the first time, but in the last days I had the same problem with some single documents, it just closed and didn't reopen. And now the whole app won't open, but I have to write an essay, so I really need to write in there...
Maybe someone has an idea how to solve the problem? I already tried to restart my Mac, but the problem is still there.
MacBook Air 13″, macOS 11.0