Do this steps and repeat until allow all you need and stop notifications.
Solve for me.
- On your Mac, choose Apple menu > System Preferences, click
Security & Privacy, then click General. - Click the lock icon to unlock it, then enter an administrator
name and password. - Select the sources from which you’ll allow software to be
installed: There should be a button that says “Allow anyway”. If not
make sure you’ve cancelled the error dialog.