I literally once got an email from another engineer using our internal tool at the big tech company I used to work for which said something like, “the page isn’t working. Please help. Attached screenshot of error.” The attached screenshot showed the error message, “Your authentication token has expired. Please refresh the page.”

I emailed him back, “oh yeah, that happens when your authentication token expires. Try refreshing the page.”

He emailed me back, “that worked, thanks!”

(For anyone wondering, no, we can’t refresh the page for the user, because they might have unsaved data on it.)