I’m getting the following error both in Chrome OS, and in Windows 10 Chrome browsers. The files (multiple files) that are producing the error are files that I created in Adobe Illustrator CC and pasted into the GFUI last week. They printed successfully then.
The errors occurred around 6:00 PM-ish Eastern on 11/17/2019.
I was able to export the same cuts in a single file, upload to the GFUI, make multiple copies of the items and place them inside the GFUI, and then cut/score the file.