could not download youtube

[teccardt]

youtube-dl --list-subs https://www.youtube.com/watch?v=cv7zBzObsH8
[youtube] cv7zBzObsH8: Downloading webpage
ERROR: Unable to download webpage: IncompleteRead(5967 bytes read, 2225 more expected) (caused by IncompleteRead(5967 bytes read, 2225 more expected)); 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.
tom@thomas-Lenovo-ideapad:~/clock/Tether$ youtube-dl -u
Usage: youtube-dl [OPTIONS] URL [URL...]

youtube-dl: error: -u option requires an argument
tom@thomas-Lenovo-ideapad:/clock/Tether$ youtube-dl -U
It looks like you installed youtube-dl with a package manager, pip, setup.py or a tarball. Please use that to update.
tom@thomas-Lenovo-ideapad:/clock/Tether$ youtube-dl --list-subs https://www.youtube.com/watch?v=cv7zBzObsH8
[youtube] cv7zBzObsH8: Downloading webpage
ERROR: Unable to download webpage: IncompleteRead(5733 bytes read, 2459 more expected) (caused by IncompleteRead(5733 bytes read, 2459 more expected)); 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.
tom@thomas-Lenovo-ideapad:/clock/Tether$ youtube-dl --list-subs https://youtu.be/cv7zBzObsH8
[youtube] cv7zBzObsH8: Downloading webpage
ERROR: Unable to download webpage: IncompleteRead(3860 bytes read, 4332 more expected) (caused by IncompleteRead(3860 bytes read, 4332 more expected)); 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.
tom@thomas-Lenovo-ideapad:/clock/Tether$ youtube-dl --list-subs https://youtu.be/cv7zBzObsH8 --verbose
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'--list-subs', u'https://youtu.be/cv7zBzObsH8', u'--verbose']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.02.22
[debug] Python version 2.7.12 - Linux-4.15.0-72-generic-x86_64-with-Ubuntu-16.04-xenial
[debug] exe versions: ffmpeg 2.8.15-0ubuntu0.16.04.1, ffprobe 2.8.15-0ubuntu0.16.04.1, rtmpdump 2.4
[debug] Proxy map: {'no': 'localhost,127.0.0.0/8,::1'}
[youtube] cv7zBzObsH8: Downloading webpage
ERROR: Unable to download webpage: IncompleteRead(814 bytes read, 7378 more expected) (caused by IncompleteRead(814 bytes read, 7378 more expected)); 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.
File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 355, in _request_webpage
return self._downloader.urlopen(url_or_request)
File "/usr/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 1905, in urlopen
return self._opener.open(req, timeout=self._socket_timeout)
File "/usr/lib/python2.7/urllib2.py", line 435, in open
response = meth(req, response)
File "/usr/lib/python2.7/dist-packages/youtube_dl/utils.py", line 774, in http_response
content = resp.read()
File "/usr/lib/python2.7/socket.py", line 355, in read
data = self._sock.recv(rbufsize)
File "/usr/lib/python2.7/httplib.py", line 598, in read
return self._read_chunked(amt)
File "/usr/lib/python2.7/httplib.py", line 658, in _read_chunked
value.append(self._safe_read(amt))
File "/usr/lib/python2.7/httplib.py", line 715, in _safe_read
raise IncompleteRead(''.join(s), amt)

tom@thomas-Lenovo-ideapad:~/clock/Tether$

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2020.01.01
• 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

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Description

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