Invalid Base 64 String for MIMI Content
I'm using Apple Mail client with Catalina, and often throughout the day I get the attached notice, and the file to which it refers does go to the correct folder even though the notice says the file can't be moved.
But the notice is disruptive (as is the bouncing Mail icon in my Dock). Is there a way to turn off this notice?
Thank you.
Mac mini, macOS 10.15