youtube-dl not working on latest version

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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 that [x])
• Use Preview tab to see how 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 2017.05.14. If it's not read this FAQ entry and update. Issues with outdated version will be rejected.

• [ x] I've verified and I assure that I'm running youtube-dl 2017.05.14

Before submitting an issue make sure you have:

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

What is the purpose of your issue?

• [x ] 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 ```):

~$ youtube-dl -v https://www.youtube.com/watch?v=snjhDUQktMs -f 'bestvideo+bestaudio/best'
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', 'https://www.youtube.com/watch?v=snjhDUQktMs', '-f', 'bestvideo+bestaudio/best']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.05.14
[debug] Python version 3.5.2 - Linux-4.8.0-52-generic-x86_64-with-Ubuntu-16.04-xenial
[debug] exe versions: ffmpeg 2.8.11-0ubuntu0.16.04.1, ffprobe 2.8.11-0ubuntu0.16.04.1
[debug] Proxy map: {}
[youtube] snjhDUQktMs: Downloading webpage
[youtube] snjhDUQktMs: Downloading video info webpage
[youtube] snjhDUQktMs: Extracting video information
[youtube] {22} signature length 43.42, html5 player vfl8jhACg
[youtube] snjhDUQktMs: Downloading player https://www.youtube.com/yts/jsbin/player-vfl8jhACg/en_US/base.js
ERROR: Signature extraction failed: Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1162, in _decrypt_signature
    video_id, player_url, s
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1085, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1138, in 
    return lambda s: initial_function([s])
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/jsinterp.py", line 254, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/jsinterp.py", line 55, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression 'oE["do"](a,67)'; 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.
 (caused by ExtractorError('Unsupported JS expression \'oE["do"](a,67)\'; 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.',)); 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.
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1162, in _decrypt_signature
    video_id, player_url, s
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1085, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1138, in 
    return lambda s: initial_function([s])
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/jsinterp.py", line 254, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/jsinterp.py", line 55, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression 'oE["do"](a,67)'; 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.
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1162, in _decrypt_signature
    video_id, player_url, s
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1085, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1138, in 
    return lambda s: initial_function([s])
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/jsinterp.py", line 254, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/jsinterp.py", line 55, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression 'oE["do"](a,67)'; 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.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/YoutubeDL.py", line 760, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/common.py", line 433, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1755, in _real_extract
    encrypted_sig, video_id, player_url, age_gate)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1172, in _decrypt_signature
    'Signature extraction failed: ' + tb, cause=e)
youtube_dl.utils.ExtractorError: Signature extraction failed: Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1162, in _decrypt_signature
    video_id, player_url, s
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1085, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/extractor/youtube.py", line 1138, in 
    return lambda s: initial_function([s])
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/jsinterp.py", line 254, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/jsinterp.py", line 55, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/local/lib/python3.5/dist-packages/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression 'oE["do"](a,67)'; 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.
 (caused by ExtractorError('Unsupported JS expression \'oE["do"](a,67)\'; 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.',)); 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.

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Description of your issue, suggested solution and other information

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