/usr/lib/python3/dist-packages/gi/types.py:113: Warning: g_object_ref: assertion 'object->ref_count > 0' failed
  return info.invoke(*args, **kwargs)

(car.py:3267): Pango-CRITICAL **: pango_layout_get_extents: assertion 'layout != NULL' failed
/usr/lib/python3/dist-packages/gi/types.py:113: Warning: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
  return info.invoke(*args, **kwargs)