What should I do if I get the following error?

    [ytdl_hook] ERROR: Signature extraction failed: Traceback (most recent call last):
    [ytdl_hook]   File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 905, in _decrypt_signature
    [ytdl_hook]     video_id, player_url, s
    [ytdl_hook]   File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 797, in _extract_signature_function
    [ytdl_hook]     raise ExtractorError('Cannot identify player %r' % player_url)
    [ytdl_hook] ExtractorError: Cannot identify player u'/yts/jsbin/player-vflC3ZxIh/en_US/base.js'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
    [ytdl_hook]  (caused by ExtractorError(u"Cannot identify player u'/yts/jsbin/player-vflC3ZxIh/en_US/base.js'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.",)); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
    [ytdl_hook] youtube-dl failed, trying to play URL directly ... 
    [ffmpeg] tls: The TLS connection was non-properly terminated.
    Failed to recognize file format.

    Exiting... (Errors when loading file)