Can't delete folders
After updating to Catalina 7 empty folders showed up in my system finder. They seem to be thumb drive and old drives that I once used. They are not on the desk top since they are no longer around anywhere.
I have tried deleting but the y will not delete. No error messages show they just won't go away. Any help would be appreciated. I'm using an iMac.
iMac 27", OS X 10.11