WARNING: Unable to log in: HTTP Error 400: Bad Request

[nel997]

Please follow the guide below

• You will be asked some questions and requested to provide some information, please read them carefully and answer honestly
• Put an x into all the boxes [ ] relevant to your issue (like this: [x])
• Use the Preview tab to see what your issue will actually look like

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2019.04.24. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2019.04.24

Before submitting an issue make sure you have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

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The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your issue

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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

Add the -v flag to your command line you run youtube-dl with (youtube-dl -v <your command line>), copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

C:\Users\Casa\Documents\Youtube-dl>youtube-dl -v --config-location C:\Users\Casa\AppData\Roaming\youtube-dl\config2.txt 
[debug] System config: []
[debug] User config: []
[debug] Custom config: ['-u', 'PRIVATE', '-p', 'PRIVATE', '--proxy', '', '--socket-timeout', '1000', '--retries', 'infinite', '-o', 'C:/Users/Casa/Documents/Youtube-dl/%(title)s.%(ext)s', 'https://www.youtube.com/playlist?list=WL', '--mark-watched']
[debug] Command-line args: ['-v', '--config-location', 'C:\\Users\\Casa\\AppData\\Roaming\\youtube-dl\\config2.txt']
[debug] Encodings: locale cp1252, fs utf-8, out utf-8, pref cp1252
[debug] youtube-dl version 2019.04.24
[debug] Python version 3.7.2 (CPython) - Windows-10-10.0.17134-SP0
[debug] exe versions: ffmpeg N-93087-g2b8458fcc5, ffprobe N-93087-g2b8458fcc5
[debug] Proxy map: {}
[youtube:watchlater] Downloading login page
[youtube:watchlater] Looking up account info
[youtube:watchlater] Logging in
WARNING: Unable to log in: HTTP Error 400: Bad Request
[youtube:watchlater] WL: Downloading webpage
ERROR: This playlist does not exist.
Traceback (most recent call last):
  File "c:\users\casa\appdata\local\programs\python\python37\lib\site-packages\youtube_dl\YoutubeDL.py", line 796, in extract_info
    ie_result = ie.extract(url)
  File "c:\users\casa\appdata\local\programs\python\python37\lib\site-packages\youtube_dl\extractor\common.py", line 529, in extract
    ie_result = self._real_extract(url)
  File "c:\users\casa\appdata\local\programs\python\python37\lib\site-packages\youtube_dl\extractor\youtube.py", line 2937, in _real_extract
    _, playlist = self._extract_playlist('WL')
  File "c:\users\casa\appdata\local\programs\python\python37\lib\site-packages\youtube_dl\extractor\youtube.py", line 2449, in _extract_playlist
    raise ExtractorError(message, expected=True)
youtube_dl.utils.ExtractorError: This playlist does not exist.


C:\Users\Casa\Documents\Youtube-dl>pause
...
<end of log>

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If the purpose of this issue is a site support request please provide all kinds of example URLs support for which should be included (replace following example URLs by yours):

• Single video: https://www.youtube.com/watch?v=BaW_jenozKc
• Single video: https://youtu.be/BaW_jenozKc
• Playlist: https://www.youtube.com/playlist?list=PL4lCao7KL_QFVb7Iudeipvc2BCavECqzc

Note that youtube-dl does not support sites dedicated to copyright infringement. In order for site support request to be accepted all provided example URLs should not violate any copyrights.

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Description of your issue, suggested solution and other information

Good day. Since a few days ago I have been unable to download my Watch Later playlist, which I use for accumulating videos I want to download and watch and have been using it for months without issue, due to the Error 400 posted above. The config2.txt file is as follows:

-u "Correct Email" -p "Correct Password"

--proxy ""
--socket-timeout 1000
--retries infinite

-o C:/Users/Casa/Documents/Youtube-dl/%(title)s.%(ext)s

https://www.youtube.com/playlist?list=WL

--mark-watched

Thanks in advance.

edit: Fixed syntax.