Deleted member 108694
I am thinking you may have an error in your sources.list file or your os-release or your lsb_release file has an errorNoDistroTemplateException: Error: could not find a distribution template for Debian/n/a
What is in your - /etc/apt/sources.list - file
What is in your - /lib/os-release - file
just open them in your text editor and paste back the results
Also have you tried to add a PPA that did not work?