Python traceback on CLI execution

[dougglenn]

FWIW, I'm using Kubuntu 20.04 LTS

~/tmp$ sudo ubuntu-cleaner
/usr/lib/python3/dist-packages/ubuntucleaner/settings/debug.py:7: PyGIWarning: Notify was imported without specifying a version first. Use gi.require_version('Notify', '0.7') before import to ensure that the right version gets loaded.
from gi.repository import Gdk, Gtk, Notify
/usr/bin/ubuntu-cleaner:70: DeprecationWarning: Gdk.threads_init is deprecated
Gdk.threads_init()
/usr/bin/ubuntu-cleaner:71: PyGIDeprecationWarning: Since version 3.11, calling threads_init is no longer needed. See: https://wiki.gnome.org/PyGObject/Threading
GObject.threads_init()
[utils.icon][WARNING] gtk-icon-theme-error-quark: Icon 'computerjanitor' not present in theme Yaru (0) (icon.py:33)
[utils.icon][WARNING] gtk-icon-theme-error-quark: Icon 'gnome-app-install' not present in theme Yaru (0) (icon.py:33)
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/ubuntucleaner/janitor/init.py", line 447, in on_janitor_check_button_toggled
self._auto_scan_cruft(iter, checked)
File "/usr/lib/python3/dist-packages/ubuntucleaner/janitor/init.py", line 538, in _auto_scan_cruft
self.do_scan_task()
File "/usr/lib/python3/dist-packages/ubuntucleaner/janitor/init.py", line 544, in do_scan_task
plugin.set_property('scan_finished', False)
AttributeError: 'NoneType' object has no attribute 'set_property'

$ sudo apt install software-properties-common
$ sudo add-apt-repository ppa:gerardpuig/ppa
$ sudo apt update #Note: This is redundant from 18.04 update. Adding a repository does it >automatically now
$ sudo apt install ubuntu-cleaner

(cruft removed)
Selecting previously unselected package gir1.2-vte-2.91:amd64.
(Reading database ... 389408 files and directories currently installed.)
Preparing to unpack .../0-gir1.2-vte-2.91_0.60.1-1ubuntu1_amd64.deb ...
Unpacking gir1.2-vte-2.91:amd64 (0.60.1-1ubuntu1) ...
Selecting previously unselected package aptdaemon.
Preparing to unpack .../1-aptdaemon_1.1.1+bzr982-0ubuntu32.1_all.deb ...
Unpacking aptdaemon (1.1.1+bzr982-0ubuntu32.1) ...
Selecting previously unselected package python3-defer.
Preparing to unpack .../2-python3-defer_1.0.6-2.1_all.deb ...
Unpacking python3-defer (1.0.6-2.1) ...
Selecting previously unselected package python3-aptdaemon.
Preparing to unpack .../3-python3-aptdaemon_1.1.1+bzr982-0ubuntu32.1_all.deb ...
Unpacking python3-aptdaemon (1.1.1+bzr982-0ubuntu32.1) ...
Selecting previously unselected package aptdaemon-data.
Preparing to unpack .../4-aptdaemon-data_1.1.1+bzr982-0ubuntu32.1_all.deb ...
Unpacking aptdaemon-data (1.1.1+bzr982-0ubuntu32.1) ...
Selecting previously unselected package python3-aptdaemon.gtk3widgets.
Preparing to unpack .../5-python3-aptdaemon.gtk3widgets_1.1.1+bzr982-0ubuntu32.1_all.deb ...
Unpacking python3-aptdaemon.gtk3widgets (1.1.1+bzr982-0ubuntu32.1) ...
Selecting previously unselected package ubuntu-cleaner.
Preparing to unpack .../6-ubuntu-cleaner_1.1.3-1_all.deb ...
Unpacking ubuntu-cleaner (1.1.3-1) ...
Setting up python3-defer (1.0.6-2.1) ...
Setting up aptdaemon-data (1.1.1+bzr982-0ubuntu32.1) ...
Setting up gir1.2-vte-2.91:amd64 (0.60.1-1ubuntu1) ...
Setting up aptdaemon (1.1.1+bzr982-0ubuntu32.1) ...
Setting up python3-aptdaemon (1.1.1+bzr982-0ubuntu32.1) ...
Setting up python3-aptdaemon.gtk3widgets (1.1.1+bzr982-0ubuntu32.1) ...
Setting up ubuntu-cleaner (1.1.3-1) ...
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for dbus (1.12.16-2ubuntu2) ...
Processing triggers for desktop-file-utils (0.24-1ubuntu3) ...
Processing triggers for mime-support (3.64ubuntu1) ...
Processing triggers for hicolor-icon-theme (0.17-2) ...