(light-locker:2120): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2149:29: Expected a valid selector
(activity-log-manager:2265): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2149:29: Expected a valid selector
(gnome-font-viewer:2656): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2149:29: Expected a valid selector
(gnome-font-viewer:2656): Pango-CRITICAL **: pango_find_base_dir: assertion 'text != NULL || length == 0' failed
(python3:4254): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion 'GTK_IS_WIDGET (widget)' failed
(python3:4254): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion 'GTK_IS_WIDGET (widget)' failed
(python3:4254): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion 'GTK_IS_WIDGET (widget)' failed
(python3:4254): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion 'GTK_IS_WIDGET (widget)' failed
(python3:4254): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion 'GTK_IS_WIDGET (widget)' failed
(python3:4254): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion 'GTK_IS_WIDGET (widget)' failed
(python3:4254): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion 'GTK_IS_WIDGET (widget)' failed
(python3:4254): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion 'GTK_IS_WIDGET (widget)' failed
(python3:4254): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion 'GTK_IS_WIDGET (widget)' failed
(python3:4254): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion 'GTK_IS_WIDGET (widget)' failed