ERROR: Unable to extract uploader name

[prabhatsoni99]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2019.11.22
• 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

prabhat@PrabhatsPC:~$ youtube-dl --verbose --extract-audio --audio-format mp3 # the command I gave

https://www.youtube.com/watch?v=WPni755-Krg
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', '--extract-audio', '--audio-format', 'mp3', 'https://www.youtube.com/watch?v=WPni755-Krg']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.03.14
[debug] Python version 3.6.9 (CPython) - Linux-4.15.0-70-generic-x86_64-with-LinuxMint-19.2-tina
[debug] exe versions: none
[debug] Proxy map: {}
[youtube] WPni755-Krg: Downloading webpage
[youtube] WPni755-Krg: Downloading video info webpage
WARNING: Unable to extract video title
[youtube] WPni755-Krg: Extracting video information
ERROR: Unable to extract uploader name; 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 "/usr/lib/python3/dist-packages/youtube_dl/YoutubeDL.py", line 785, in extract_info
    ie_result = ie.extract(url)
  File "/usr/lib/python3/dist-packages/youtube_dl/extractor/common.py", line 440, in extract
    ie_result = self._real_extract(url)
  File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 1704, in _real_extract
    raise ExtractorError('Unable to extract uploader name')
youtube_dl.utils.ExtractorError: Unable to extract uploader name; 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.

Description

WRITE DESCRIPTION HERE

This is strange. Also, I tried downloading this video from a few other websites like https://sconverter.com/ and it also gave error after downloading around 10-15 MB.

[prabhatsoni99]

Ok just realised my version was not 2019.11.22. I had installed from apt repository