Bug with downloading Crunchyroll login page

[Elixir-Nathan]

Checklist

• [ X ] I'm reporting a broken site support issue
• [ X ] I've verified that I'm running youtube-dl version 2020.09.20
• [ X ] I've checked that all provided URLs are alive and playable in a browser
• [ X ] I've checked that all URLs and arguments with special characters are properly quoted or escaped
• [ X ] I've searched the bugtracker for similar bug reports including closed ones
• I've read bugs section in FAQ

Verbose log

[debug] System config: []
[debug] User config: []
[debug] Custom config: ['-v', '-i', '--sub-lang', 'frFR', '--write-sub', '--embed-subs', '--rm-cache-dir', '--user-agent', 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36', '-f', 'bestvideo[height<=720]+bestaudio/best[height<=720]', '-o', 'Episode %(episode_number)s.%(ext)s']
[debug] Command-line args: ['--config-location', '/Share/Anime/Configuration/Youtube-DL-Crun.conf', '--netrc', 'https://www.crunchyroll.com/fr/golden-kamuy/episode-1-wenkamuy-769171']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, pref UTF-8
[debug] youtube-dl version 2020.09.20
[debug] Python version 3.8.5 (CPython) - Linux-5.4.0-48-generic-x86_64-with-glibc2.29
[debug] exe versions: ffmpeg 4.2.4, ffprobe 4.2.4, rtmpdump 2.4
[debug] Proxy map: {}
Removing cache dir /root/.cache/youtube-dl ..
[crunchyroll] 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/local/lib/python3.8/dist-packages/youtube_dl/extractor/common.py", line 632, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/usr/local/lib/python3.8/dist-packages/youtube_dl/YoutubeDL.py", line 2238, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/usr/lib/python3.8/urllib/request.py", line 531, in open
    response = meth(req, response)
  File "/usr/lib/python3.8/urllib/request.py", line 640, in http_response
    response = self.parent.error(
  File "/usr/lib/python3.8/urllib/request.py", line 569, in error
    return self._call_chain(*args)
  File "/usr/lib/python3.8/urllib/request.py", line 502, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.8/urllib/request.py", line 649, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)

Description

This bug happens when downloading the login pages, when Youtube-DL tries to connect to the account. I also try with the arguments -u and -p, it doesn’t work too.
I don’t really know how to fix this problem, I am neither developing this software, only small scripts. So I will not be able to give an answer to the solution of this one, I just pose this bug here, for you to read it.