I edited a page, and after publishing, I now see a message that says Unsupported Content on the page, and very little else. The page title shows, but no other detail. The ... menu also does not display, so I cannot go back to the previous version. The changes to the page were mostly moving content from a 2 column area to another 2 column that I added - it included text, and picture, and an embedded draw.io diagram. There is a significant amount of work on this page - it is important that I recover the information, even if I have to create another page to move forward.
In general, page loading has been slow today, but content and menus display normally. I have not edited another page, and am hesitant to do so after what happened.
