Artboards suddenly became white, nothing could be viewed, file can't be saved, no recovery files

Working on a MAC BOOK PRO.

I had several files open in Illustrator. One of them used an Adobre font, which was a first time using such for the new version. I saved and closed this file. But later this happened to my other file with 4 artboards almost ready for export. They became white. First a Google font Poppins I use every day did not want to change color and then it changed the text box background instead of the text. I lost my patience and ourlined it to manipulate as I want. Then this error dialogue popped uop and all was lost. Nothing I did saved my file successfully. Then I force quit hoping there will be a recovery file. No. Nothing. An hour of work lost. Considering reerting to the old version.