If I try to open System Settings, nothing happens.If I use the terminal, I get an error:$cinnamon-settingsTraceback (most recent call last):  File /usr/share/cinnamon/cinnamon-settings/cinnamon-settings.py, line 18, in <module>gi.require_version('Gtk', '3.0')AttributeError: 'module' object has no attribute 'require_version'
Linux Mint - Can't open cinnamon-settings
linux mint;python;cinnamon