Newbie user: Help! I've lost a chapter text

Hi, I could really use some help.

I was working on a chapter earlier then exited out of scrivener and got an error message on my PC. It restarted and when I re-started scrivener all the text in my chapter was gone.

There was originally around 3,000 words in there from a previous session. Now, the chapter heading is there and the page icon looks as if it’s registered that text has been entered but the whole text file is blank.

I’d be really pissed off if I had to rewrite the whole chapter from scratch - is there a way I can recover this text - even if it is only from a previous session?

I have no idea where to start and searching on this forum for similar issues has only confused me. Any help very gratefully received.

Update. Thanks to Rob’s help this issue has now been resolved.