GNOME places-menu can't launch network locations
When selecting bookmarked network locations in the Places menu prompts a notification "Failed to launch [name]" Operation not supported.
Choose the needed URI schemes ...
... and use xdg-settings to set Nautilus as the handler
# xdg-settings set default-url-scheme-handler sftp org.gnome.Nautilus.desktop
# xdg-settings set default-url-scheme-handler davs org.gnome.Nautilus.desktop
# xdg-settings set default-url-scheme-handler smb org.gnome.Nautilus.desktop