run_rtsp example throw: TypeError: 'Iterator' object is not iterable

[shithead]

Throw an Error TypeError: 'Iterator' object is not iterable in example run_rtsp.py.

gstreamer-python/examples/run_rtsp.py

Line 162 in c8d4e04

return [e for e in element.iterate_elements() if isinstance(e, cls)]

Log:

Traceback (most recent call last):
  File "rtsp-server.py", line 212, in do_configure
    appsrcs = get_child_by_cls(rtsp_media.get_element(), GstApp.AppSrc)
  File "rtsp-server.py", line 162, in get_child_by_cls
    return [e for e in element.iterate_elements() if isinstance(e, cls)]
TypeError: 'Iterator' object is not iterable