Pluralsight plugin no longer working.

[hp600]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2019.06.27
• 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 issues including closed ones

Verbose log

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--username', u'PRIVATE', u'--password', u'PRIVATE', u'--verbose', u'--sleep-interval', u'150', u'https://app.pluralsight.com/library/courses/aws-managing-applications/table-of-contents', u'-o', u'%(playlist)s/%(chapter_number)s. %(chapter)s/%(playlist_index)s. %(title)s.%(ext)s']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.06.27
[debug] Python version 2.7.13 (CPython) - Linux-4.9.0-8-amd64-x86_64-with-debian-9.8
[debug] exe versions: ffmpeg 3.2.14-1, ffprobe 3.2.14-1, rtmpdump 2.4
[debug] Proxy map: {}
[pluralsight:course] aws-managing-applications: Downloading JSON metadata
[download] Downloading playlist: Managing Applications in AWS
[pluralsight:course] playlist Managing Applications in AWS: Collected 47 video ids (downloading 47 of them)
[download] Downloading video 1 of 47
[pluralsight] Downloading login page
ERROR: Unable to download webpage: HTTP Error 403: Forbidden (caused by HTTPError()); 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 "/home/pj/.local/lib/python2.7/site-packages/youtube_dl/extractor/common.py", line 627, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/home/pj/.local/lib/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 2227, 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/urllib2.py", line 548, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python2.7/urllib2.py", line 473, in error
    return self._call_chain(*args)
  File "/usr/lib/python2.7/urllib2.py", line 407, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.7/urllib2.py", line 556, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)

Description

I'm getting "ERROR: Unable to download webpage: HTTP Error 403: Forbidden" when trying to download video playlists from Pluralsight.
I have used two different accounts for testing and both are working from the browser.
I can login and stream videos, but I'm unable to download video playlists via youtube-dl.
I also tried running youtube-dl with both accounts from different IP addresses via VPN and the problem persists.