My whole note turned to spaces

i was writing in my computer when its battery ran out. when i turned it back on, the release notes showed up (so it was possibly updated) and the note i was on became completely spaces. tried ctrl+z, copy/paste into another program and export to pdf but none work
the character count at about the same with word count at 0 indicates to me that it isnt a visibility issue not it got completely deleted. can anyone help me please?

Try the File Recovery core plugin. Hopefully there’s a snapshot or two in there. Remember to start tying a note name in the search box for suggestions to show up.