Hi I am unable to add repositories or change repositories by using setting option of Synaptic Package Manager The error messages are shown below Yours VN Synaptic Error: root@Lenovo-B490:/etc/apt/apt.conf.d# gksu --desktop /usr/share/applications/software-properties-gtk.desktop /usr/bin/software-properties-gtk /usr/share/themes/MBuntu-Y-For-Gnome-Fallback/gtk-2.0/widgets/panel.rc:18: Unable to locate image file in pixmap_path: "images/panel/panel-normal.svg" /usr/share/themes/MBuntu-Y-For-Gnome-Fallback/gtk-2.0/widgets/panel.rc:21: Background image options specified without filename /usr/share/themes/MBuntu-Y-For-Gnome-Fallback/gtk-2.0/widgets/panel.rc:27: Unable to locate image file in pixmap_path: "images/panel/panel-active.svg" /usr/share/themes/MBuntu-Y-For-Gnome-Fallback/gtk-2.0/widgets/panel.rc:30: Background image options specified without filename /usr/share/themes/MBuntu-Y-For-Gnome-Fallback/gtk-2.0/widgets/panel.rc:61: error: invalid string constant "button", expected valid string constant Gtk-Message: Failed to load module "canberra-gtk-module" (gksu:4948): GConf-WARNING **: Client failed to connect to the D-BUS daemon: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. GConf Error: No D-BUS daemon running (gksu:4948): GConf-WARNING **: Client failed to connect to the D-BUS daemon: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. GConf Error: No D-BUS daemon running (gksu:4948): GConf-WARNING **: Client failed to connect to the D-BUS daemon: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. GConf Error: No D-BUS daemon running (gksu:4948): GConf-WARNING **: Client failed to connect to the D-BUS daemon: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. GConf Error: No D-BUS daemon running (gksu:4948): GConf-CRITICAL **: gconf_value_free: assertion 'value != NULL' failed Traceback (most recent call last): File "/usr/bin/software-properties-gtk", line 101, in <module> app = SoftwarePropertiesGtk(datadir=options.data_dir, options=options, file=file) File "/usr/lib/python3/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 98, in __init__ SoftwareProperties.__init__(self, options=options, datadir=datadir) File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 109, in __init__ self.reload_sourceslist() File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 599, in reload_sourceslist self.distro.get_sources(self.sourceslist) File "/usr/lib/python3/dist-packages/aptsources/distro.py", line 89, in get_sources (self.id, self.codename)) aptsources.distro.NoDistroTemplateException: Error: could not find a distribution template for Ubuntu/n/a root@Lenovo-B490:/etc/apt/apt.conf.d#
