ramla@ropokki:~$ gnome-panel

(gnome-panel:8633): Gdk-CRITICAL **: gdk_window_set_geometry_hints: assertion 'geometry != NULL || geom_mask == 0' failed

** (gnome-panel:8633): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files