ERROR: Signature extraction failed

[cybernet1x]

Checklist

I'm not here to spend 3 hours writing a damn essay, I came here to take a moment from my day to report a Bug.

PASTE VERBOSE LOG HERE

youtube-dl --verbose -f 251 https://www.youtube.com/watch?v=eTj1Fhfgouk
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--verbose', u'-f', u'251', u'https://www.youtube.com/watch?v=eTj1Fhfgouk']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.02.16
[debug] Python version 2.7.17 (CPython) - Linux-4.15.0-74-generic-x86_64-with-LinuxMint-19.2-tina
[debug] exe versions: ffmpeg 3.4.6, ffprobe 3.4.6
[debug] Proxy map: {}
[youtube] eTj1Fhfgouk: Downloading webpage
[youtube] eTj1Fhfgouk: Downloading video info webpage
WARNING: unable to extract html5 player; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[youtube] {18} signature length 106, html5 player None
ERROR: Signature extraction failed: Traceback (most recent call last):
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1385, in _decrypt_signature
video_id, player_url, s
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1262, in _extract_signature_function
raise ExtractorError('Cannot identify player %r' % player_url)
ExtractorError: Cannot identify player u'https://www.youtube.com/s/player/bfb2a3b4/player_ias.vflset/en_US/base.js'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
(caused by ExtractorError(u"Cannot identify player u'https://www.youtube.com/s/player/bfb2a3b4/player_ias.vflset/en_US/base.js'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U 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; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1385, in _decrypt_signature
video_id, player_url, s
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1262, in _extract_signature_function
raise ExtractorError('Cannot identify player %r' % player_url)
ExtractorError: Cannot identify player u'https://www.youtube.com/s/player/bfb2a3b4/player_ias.vflset/en_US/base.js'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 796, in extract_info
ie_result = ie.extract(url)
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 530, in extract
ie_result = self._real_extract(url)
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 2048, in _real_extract
encrypted_sig, video_id, player_url, age_gate)
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1395, in _decrypt_signature
'Signature extraction failed: ' + tb, cause=e)
ExtractorError: Signature extraction failed: Traceback (most recent call last):
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1385, in _decrypt_signature
video_id, player_url, s
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1262, in _extract_signature_function
raise ExtractorError('Cannot identify player %r' % player_url)
ExtractorError: Cannot identify player u'https://www.youtube.com/s/player/bfb2a3b4/player_ias.vflset/en_US/base.js'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
(caused by ExtractorError(u"Cannot identify player u'https://www.youtube.com/s/player/bfb2a3b4/player_ias.vflset/en_US/base.js'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U 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; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

## Description

I was trying to download a 1 hour music compilation audio from youtube.