Error installing tor proxy

Error installing app: (“cannot access local variable ‘aug’ where it is not associated with a value”, b’‘, b’\x1b[97m INFO\x1b[0m \x1b[94mplinth.modules.torproxy.privileged\x1b[0m Performing first time setup for Tor Proxy\n\x1b[31m ERROR\x1b[0m \x1b[94m__main__ \x1b[0m Error executing action: cannot access local variable 'aug' where it is not associated with a value\nTraceback (most recent call last):\n File “/usr/share/plinth/actions/actions”, line 93, in _call\n return_values = func(*arguments['args'], **arguments['kwargs'])\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n File “/usr/lib/python3/dist-packages/plinth/modules/torproxy/privileged.py”, line 29, in setup\n _first_time_setup()\n File “/usr/lib/python3/dist-packages/plinth/modules/torproxy/privileged.py”, line 37, in _first_time_setup\n _disable_apt_transport_tor()\n File “/usr/lib/python3/dist-packages/plinth/modules/torproxy/privileged.py”, line 187, in _disable_apt_transport_tor\n for uri_path in iter_apt_uris(aug):\n ^^^\nUnboundLocalError: cannot access local variable 'aug' where it is not associated with a value\n’)

It looks like augeas was not able to parse your Apt sources lists. Could you please share the contents of your /etc/apt/sources.list as well as any files under /etc/apt/sources.list.d/?