1722784 /usr/bin/gnome-calendar:6:g_assertion_message:g_assertion_message_expr:ensure_surface_for_gicon:gtk_icon_helper_load_surface:gtk_icon_helper_ensure_surface 1964830 /usr/bin/gnome-calendar:6:g_assertion_message:g_assertion_message_expr:on_calendar_monitor_completed_cb:g_closure_invoke:signal_emit_unlocked_R 1858857 /usr/bin/gnome-calendar:6:raise:abort:g_assertion_message:g_assertion_message_expr:gcal_timezone_to_icaltimezone