Problem saving content

hi there, I am having trouble saving the page I get this error

  1. confirm that WP is still working as expected (maybe a background update broke things, randomly)

  2. open up a different page in WP and ensure that you’re still logged in

  3. open up that page again in a different browser & see what changes aren’t saving. copy/paste them over to the new page so you don’t lose your progress.

whenever I have this error, these are my steps. hope they help!