Permission
I get the error message The folder “Downloads” can’t be opened because you don’t have permission to see its content' How do I get this permission and why might it have recently started to appear as a message?
iMac Pro
Do a Get info on your Home folder, unlock the lock in the Get Info panel. Make sure it says you have Read & Write privileges.
Using the tiny gear icon, use the drop down to "Apply to enclosed items...