KeyError: 'content-length'

[sentry-io[bot]]

Sentry Issue: GPODDERNET-FEEDS-D6

KeyError: 'content-length'
(9 additional frame(s) were not displayed)
...
  File "feedservice/parse/soundcloud.py", line 211, in get_episodes
    text_processor=self.text_processor) for t in tracks]
  File "feedservice/parse/soundcloud.py", line 210, in <listcomp>
    parsers = [SoundcloudEpisodeParser(t, self.get_author(),
  File "feedservice/parse/soundcloud.py", line 99, in get_tracks
    filesize, filetype, filename = self.get_metadata(url)
  File "feedservice/parse/soundcloud.py", line 164, in get_metadata
    return (res.headers['Content-Length'], res.headers['Content-Type'],
  File "requests/structures.py", line 52, in __getitem__
    return self._store[key.lower()][1]