Signature extraction failed

[seahorse41]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2021.06.06
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar bug reports including closed ones
• I've read bugs section in FAQ

Verbose log

$ youtube-dl -f 18 --verbose https://www.youtube.com/watch?v=PgHiXkbvNZQ
[debug] System config: []
[debug] User config: ['--restrict-filenames', '-o', '~/Downloads/%(title)s.%(uploader)s.%(id)s.%(format_id)s-%(height)sp.%(ext)s']
[debug] Custom config: []
[debug] Command-line args: ['-f', '18', '--verbose', 'https://www.youtube.com/watch?v=PgHiXkbvNZQ']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2021.06.06
[debug] Python version 3.5.3 (CPython) - Linux-4.9.0-16-686-pae-i686-with-debian-9.13
[debug] exe versions: ffmpeg N-96573-g73aab08d9d, ffprobe N-96573-g73aab08d9d, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] PgHiXkbvNZQ: Downloading webpage
[youtube] PgHiXkbvNZQ: Downloading player 204bfffb
ERROR: Signature extraction failed: Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1349, 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
    res = self._parse_sig_js(code)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1331, in _parse_sig_js
    initial_function = jsi.extract_function(funcname)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 245, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'na'; 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("Could not find JS function 'na'; 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 1349, 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
    res = self._parse_sig_js(code)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1331, in _parse_sig_js
    initial_function = jsi.extract_function(funcname)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 245, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'na'; 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 1349, 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
    res = self._parse_sig_js(code)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1331, in _parse_sig_js
    initial_function = jsi.extract_function(funcname)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 245, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'na'; 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.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 815, in wrapper
    return func(self, *args, **kwargs)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 836, in __extract_info
    ie_result = ie.extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 534, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1623, in _real_extract
    signature = self._decrypt_signature(sc['s'][0], video_id, player_url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1359, in _decrypt_signature
    'Signature extraction failed: ' + tb, cause=e)
youtube_dl.utils.ExtractorError: Signature extraction failed: Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1349, 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
    res = self._parse_sig_js(code)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1331, in _parse_sig_js
    initial_function = jsi.extract_function(funcname)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 245, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'na'; 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("Could not find JS function 'na'; 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

New error message not seen before, failing to work.

[coletdjnz]

duplicate of #30363

[ghost]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2021.06.06
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar bug reports including closed ones
• I've read bugs section in FAQ

Verbose Log

C:\Users\jvu90\Music>youtube-dl -f bestaudio -x --audio-format mp3 --audio-quality 0 -o "/Jack Stauber - Pop Food/%(playlist_index)s%(title)s.%(ext)s" https://www.youtube.com/playlist?list=OLAK5uy_nkGfAD3M3C_N5qmIsHzTe2hoXD0vepSIQ  --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-f', 'bestaudio', '-x', '--audio-format', 'mp3', '--audio-quality', '0', '-o', '/Jack Stauber - Pop Food/%(playlist_index)s%(title)s.%(ext)s', 'https://www.youtube.com/playlist?list=OLAK5uy_nkGfAD3M3C_N5qmIsHzTe2hoXD0vepSIQ', '--verbose']
[debug] Encodings: locale cp1252, fs utf-8, out utf-8, pref cp1252
[debug] youtube-dl version 2021.06.06
[debug] Python version 3.9.9 (CPython) - Windows-10-10.0.19044-SP0
[debug] exe versions: ffmpeg 2021-09-11-git-3e127b595a-full_build-www.gyan.dev, ffprobe 2021-09-11-git-3e127b595a-full_build-www.gyan.dev
[debug] Proxy map: {}
[youtube:tab] OLAK5uy_nkGfAD3M3C_N5qmIsHzTe2hoXD0vepSIQ: Downloading webpage
[download] Downloading playlist: Pop Food
[youtube:tab] playlist Pop Food: Downloading 11 videos
[download] Downloading video 1 of 11
[youtube] e2qG5uwDCW4: Downloading webpage
[youtube] e2qG5uwDCW4: Downloading player 204bfffb
ERROR: Signature extraction failed: Traceback (most recent call last):
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1348, in _decrypt_signature
    func = self._extract_signature_function(
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1262, in _extract_signature_function
    res = self._parse_sig_js(code)
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1331, in _parse_sig_js
    initial_function = jsi.extract_function(funcname)
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\jsinterp.py", line 245, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'na'; 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.
 (caused by ExtractorError("Could not find JS function 'na'; 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.
Traceback (most recent call last):
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1348, in _decrypt_signature
    func = self._extract_signature_function(
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1262, in _extract_signature_function
    res = self._parse_sig_js(code)
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1331, in _parse_sig_js
    initial_function = jsi.extract_function(funcname)
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\jsinterp.py", line 245, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'na'; 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.
Traceback (most recent call last):
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1348, in _decrypt_signature
    func = self._extract_signature_function(
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1262, in _extract_signature_function
    res = self._parse_sig_js(code)
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1331, in _parse_sig_js
    initial_function = jsi.extract_function(funcname)
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\jsinterp.py", line 245, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'na'; 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.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\YoutubeDL.py", line 815, in wrapper
    return func(self, *args, **kwargs)
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\YoutubeDL.py", line 836, in __extract_info
    ie_result = ie.extract(url)
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\common.py", line 534, in extract
    ie_result = self._real_extract(url)
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1623, in _real_extract
    signature = self._decrypt_signature(sc['s'][0], video_id, player_url)
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1358, in _decrypt_signature
    raise ExtractorError(
youtube_dl.utils.ExtractorError: Signature extraction failed: Traceback (most recent call last):
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1348, in _decrypt_signature
    func = self._extract_signature_function(
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1262, in _extract_signature_function
    res = self._parse_sig_js(code)
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\extractor\youtube.py", line 1331, in _parse_sig_js
    initial_function = jsi.extract_function(funcname)
  File "C:\Users\jvu90\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\site-packages\youtube_dl\jsinterp.py", line 245, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'na'; 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.
 (caused by ExtractorError("Could not find JS function 'na'; 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.

[dirkf]

Duplicate of #30363, with fix.

[seahorse41]

@dirkf I did search for the phrase I titled this bug as, so am sorry it is a duplicate. I didn't see it when I searched.
I saw broken site support and thought broken program supporting youtube handling, ... one wrong character.