ERROR: Signature extraction failed: Traceback (most recent call last):

 "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 479, in _decrypt_signature
video_id, player_url, s

 "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 356, in _extract_signature_function
raise ExtractorError('Cannot identify player %r' % player_url)ExtractorError: Cannot identify player u'https://s.ytimg.com/yts/jsbin/player-en_US-vflHlG7su/base.js'; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type
youtube-dl -U
to update.
Traceback (most recent call last):


 "/usr/local/lib/python3.7/dist-packages/open_cobol_ide/extlibs/keyring/backend.py", line 155, in _load_plugins

init_func = ep.load()


 "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2443, in load

return self.resolve()


 "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2449, in resolve

module = __import__(self.module_name, fromlist=['__name__'], level=0)
ModuleNotFoundError: No module named 'keyring.backends.chainer'
