PluralSight: Unable to download login webpage.

[AlexBSoD]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2019.08.13
• 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: ['--username', 'PRIVATE', '--password', 'PRIVATE', '--sleep-interval', '120', '--no-mark-watched', '--verbose', '--all-subs', '--embed-subs', 'https://app.pluralsight.com/library/courses/aspnet-core-fundamentals/table-of-contents', '-o', '%(playlist)s/%(chapter_number)s. %(chapter)s/%(id)s - %(title)s.%(ext)s']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.08.13
[debug] Python version 3.6.5 (CPython) - Linux-4.12.14-lp151.28.10-default-x86_64-with-glibc2.3.4
[debug] exe versions: none
[debug] Proxy map: {}
[pluralsight:course] aspnet-core-fundamentals: Downloading JSON metadata
[download] Downloading playlist: ASP.NET Core Fundamentals
[pluralsight:course] playlist ASP.NET Core Fundamentals: Collected 90 video ids (downloading 90 of them)
[download] Downloading video 1 of 90
[pluralsight] Downloading login page
ERROR: Unable to download webpage: HTTP Error 403: Forbidden (caused by <HTTPError 403: 'Forbidden'>); 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/python3.6/site-packages/youtube_dl/extractor/common.py", line 627, in _request_webpage
return self._downloader.urlopen(url_or_request)
File "/usr/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 2229, in urlopen
return self._opener.open(req, timeout=self._socket_timeout)
File "/usr/lib64/python3.6/urllib/request.py", line 532, in open
response = meth(req, response)
File "/usr/lib64/python3.6/urllib/request.py", line 642, in http_response
'http', request, response, code, msg, hdrs)
File "/usr/lib64/python3.6/urllib/request.py", line 570, in error
return self._call_chain(*args)
File "/usr/lib64/python3.6/urllib/request.py", line 504, in _call_chain
result = func(*args)
File "/usr/lib64/python3.6/urllib/request.py", line 650, in http_error_default
raise HTTPError(req.full_url, code, msg, hdrs, fp)

Description

Similar problems were found, but their status is 'resolved', which in the current version is not true.