What does mean a question mark on a folder in Finder's side bar
Hello folks, I have no idea how or why, but all of sudden there was a folder with a question mark in my Finder's side bar. When I click on it comes a message saying folder can't be opened as an item is missing.
Except for that, my iMac seems to working properly.
What does that mean and how to get a rid of such folder?
Thanks Paulo
iMac 21.5″, macOS 10.15