Photos Export unknown error (256)
I have recently upgraded to macOS Catalina 10.15.1 on my new iMac. Trying to Export some photos in my library to my desktop and can't either as an unmodified photo or just as a photo. I get Export complete with Errors. 0 (of 1) files have been exported. The export operation failed to create a file for the photo identified below: IMG_2843.jpeg. Unknown error (256). Any suggestions? Can't seem to export anything right now but I exported photos successfully on Oct. 28. Makes no sense.
iMac, OS X 10.11