Reading package lists...
Building dependency tree...
Reading state information...
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 ubuntu-gnome-desktop : Depends: adwaita-icon-theme-full but it is not going to be installed
                        Depends: gdm3 but it is not going to be installed
                        Depends: gnome-control-center but it is not going to be installed
                        Depends: gnome-documents but it is not going to be installed
                        Depends: gnome-session but it is not going to be installed
                        Depends: gnome-settings-daemon but it is not going to be installed
                        Depends: gnome-shell but it is not going to be installed
                        Depends: gnome-shell-extensions but it is not going to be installed
                        Depends: gnome-tweak-tool but it is not going to be installed
                        Depends: tracker but it is not going to be installed
                        Recommends: gnome-music but it is not going to be installed
                        Recommends: gnome-photos but it is not going to be installed
                        Recommends: python3-aptdaemon.pkcompat but it is not going to be installed