Can't download YouTube subs - TFA failure

[AcouBass]

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.05.18.1. 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 Issues with outdated version will be rejected.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 2017.05.18.1

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• At least skimmed through README and most notably FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones

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

pi@raspberrypi:~ $ youtube-dl -i -u censoreduser@gmail.com :ytsubs -p 'censoredpassword' -2 745042 --dateafter now-10days -v --download-archive ~/youtubearchive
[debug] System config: []
[debug] User config: [u'--prefer-free-formats', u'-c', u'--output', u'~/Videos/youtubes/%(title)s %(id)s.%(ext)s', u'--no-mtime', u'--download-archive', u'~/pipes/youtubearchive']
[debug] Custom config: []
[debug] Command-line args: [u'-i', u'-u', u'PRIVATE', u':ytsubs', u'-p', u'PRIVATE', u'-2', u'745042', u'--dateafter', u'now-10days', u'-v', u'--download-archive', u'/home/pi/youtubearchive']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.05.18.1
[debug] Python version 2.7.9 - Linux-4.9.22-v7+-armv7l-with-debian-8.0
[debug] exe versions: ffmpeg 3.2.2-1, ffprobe 3.2.2-1, rtmpdump 2.4-n78-git3a1e20c-ppa8
[debug] Proxy map: {}
[youtube:subscriptions] Downloading login page
[youtube:subscriptions] Looking up account info
[youtube:subscriptions] Logging in
[youtube:subscriptions] Submitting TFA code
WARNING: Unable to submit TFA code: HTTP Error 500: Internal Server Error
WARNING: Unable to extract CheckCookie URL
[youtube:subscriptions] Youtube Subscriptions: Downloading webpage
[download] Downloading playlist: Youtube Subscriptions
[youtube:subscriptions] playlist Youtube Subscriptions: Collected 0 video ids (downloading 0 of them)
[download] Finished downloading playlist: Youtube Subscriptions

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Description of your issue, suggested solution and other information

I use the pasted script (usually in the form of a .sh script, but have been running from the command line to test) to yank my YouTube subscriptions on a fairly often basis, however for recent versions this has stopped working, with the HTTP Error 500 shown. Just to test, I also tried with --cookies, as well as with an app password from my Google account, though generally I use my 'regular' Google password.

[iomintz]

@dstftw what issue does this one duplicate?