Ubiquity 2.18.8.12
Gtk-Message: Failed to load module "overlay-scrollbar"
Gtk-Message: Failed to load module "overlay-scrollbar"

(ubiquity:2417): Gtk-CRITICAL **: gtk_radio_button_set_group: assertion '!g_slist_find (group, radio_button)' failed

(ubiquity:2417): Gtk-CRITICAL **: gtk_radio_button_set_group: assertion '!g_slist_find (group, radio_button)' failed
update_release_notes_label()
update_release_notes_label()

(ubiquity:2417): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2417): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2417): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2417): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2417): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2417): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2417): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2417): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:2417): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed
debconf: DbDriver "passwords" warning: could not open /var/cache/debconf/passwords.dat: Permission denied
No such schema 'org.gnome.settings-daemon.plugins.media-keys'
No such schema 'com.canonical.indicator.session'
No such schema 'org.gnome.settings-daemon.plugins.power'
Ubiquity 2.18.8.12
Gtk-Message: Failed to load module "overlay-scrollbar"

(ubiquity:11251): Gtk-CRITICAL **: gtk_radio_button_set_group: assertion '!g_slist_find (group, radio_button)' failed

(ubiquity:11251): Gtk-CRITICAL **: gtk_radio_button_set_group: assertion '!g_slist_find (group, radio_button)' failed

(ubiquity:11251): libappindicator-WARNING **: Unable to get the session bus: Cannot spawn a message bus when setuid

(ubiquity:11251): LIBDBUSMENU-GLIB-WARNING **: Unable to get session bus: Cannot spawn a message bus when setuid
update_release_notes_label()
update_release_notes_label()

(ubiquity:11251): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:11251): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:11251): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:11251): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:11251): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed

(ubiquity:11251): Gtk-CRITICAL **: gtk_widget_set_allocation: assertion 'gtk_widget_get_visible (widget) || gtk_widget_is_toplevel (widget)' failed
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
/usr/lib/ubiquity/plugins/ubi-console-setup.py:116: Warning: Source ID 2770 was not found when attempting to remove it
  GLib.source_remove(self.keyboard_layout_timeout_id)
/usr/lib/ubiquity/plugins/ubi-console-setup.py:116: Warning: Source ID 3106 was not found when attempting to remove it
  GLib.source_remove(self.keyboard_layout_timeout_id)
/usr/lib/ubiquity/plugins/ubi-console-setup.py:138: Warning: Source ID 2773 was not found when attempting to remove it
  GLib.source_remove(self.keyboard_variant_timeout_id)
/usr/lib/ubiquity/plugins/ubi-console-setup.py:116: Warning: Source ID 3161 was not found when attempting to remove it
  GLib.source_remove(self.keyboard_layout_timeout_id)
/usr/lib/ubiquity/plugins/ubi-console-setup.py:116: Warning: Source ID 3360 was not found when attempting to remove it
  GLib.source_remove(self.keyboard_layout_timeout_id)
/usr/lib/ubiquity/plugins/ubi-console-setup.py:138: Warning: Source ID 3179 was not found when attempting to remove it
  GLib.source_remove(self.keyboard_variant_timeout_id)
/usr/lib/ubiquity/plugins/ubi-console-setup.py:138: Warning: Source ID 3548 was not found when attempting to remove it
  GLib.source_remove(self.keyboard_variant_timeout_id)
/usr/lib/ubiquity/plugins/ubi-console-setup.py:72: Warning: Source ID 3516 was not found when attempting to remove it
  GLib.source_remove(self.keyboard_layout_timeout_id)
/usr/lib/ubiquity/plugins/ubi-console-setup.py:74: Warning: Source ID 4798 was not found when attempting to remove it
  GLib.source_remove(self.keyboard_variant_timeout_id)
/usr/lib/ubiquity/plugins/ubi-usersetup.py:408: Warning: Source ID 5208 was not found when attempting to remove it
  GLib.source_remove(self.hostname_timeout_id)
/usr/lib/ubiquity/plugins/ubi-usersetup.py:408: Warning: Source ID 5247 was not found when attempting to remove it
  GLib.source_remove(self.hostname_timeout_id)
/usr/lib/ubiquity/plugins/ubi-usersetup.py:408: Warning: Source ID 5261 was not found when attempting to remove it
  GLib.source_remove(self.hostname_timeout_id)
/usr/lib/ubiquity/plugins/ubi-usersetup.py:408: Warning: Source ID 5266 was not found when attempting to remove it
  GLib.source_remove(self.hostname_timeout_id)
/usr/lib/ubiquity/plugins/ubi-usersetup.py:408: Warning: Source ID 5274 was not found when attempting to remove it
  GLib.source_remove(self.hostname_timeout_id)
/usr/lib/ubiquity/plugins/ubi-usersetup.py:408: Warning: Source ID 5279 was not found when attempting to remove it
  GLib.source_remove(self.hostname_timeout_id)
/usr/lib/ubiquity/plugins/ubi-usersetup.py:408: Warning: Source ID 5288 was not found when attempting to remove it
  GLib.source_remove(self.hostname_timeout_id)
/usr/lib/ubiquity/plugins/ubi-usersetup.py:408: Warning: Source ID 5298 was not found when attempting to remove it
  GLib.source_remove(self.hostname_timeout_id)
/usr/lib/ubiquity/plugins/ubi-usersetup.py:408: Warning: Source ID 5303 was not found when attempting to remove it
  GLib.source_remove(self.hostname_timeout_id)
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
debconf: DbDriver "passwords" warning: could not open /var/cache/debconf/passwords.dat: Permission denied
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
No such schema 'com.canonical.indicator.session'
Exception caught in process_line:
Traceback (most recent call last):
  File "/usr/lib/ubiquity/ubiquity/filteredcommand.py", line 145, in process_line
    return self.dbfilter.process_line()
  File "/usr/lib/ubiquity/ubiquity/debconffilter.py", line 430, in process_line
    data = self.db.command(command, *params)
  File "/usr/lib/python3/dist-packages/debconf.py", line 66, in command
    self.write.write("%s %s\n" % (command, ' '.join(map(str, params))))
ValueError: I/O operation on closed file.