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ubuntu 14.04.02
youtube-dl --verbose -f136+140 'https://www.youtube.com/playlist?list=PLQMVnqe4XbictUtFZK1-gBYvyUzTWJnOk'[debug] System config: [][debug] User config: [][debug] Command-line args: ['--verbose', '-f136+140', 'https://www.youtube.com/playlist?list=PLQMVnqe4XbictUtFZK1-gBYvyUzTWJnOk'][debug] Encodings: locale 'UTF-8', fs 'UTF-8', out 'UTF-8', pref: 'UTF-8'[debug] youtube-dl version 2014.02.17[debug] Python version 2.7.6 - Linux-3.13.0-52-generic-x86_64-with-Ubuntu-14.04-trusty[debug] Proxy map: {}[youtube:playlist] PLQMVnqe4XbictUtFZK1-gBYvyUzTWJnOk: Downloading page #1WARNING: [youtube:playlist] PLQMVnqe4XbictUtFZK1-gBYvyUzTWJnOk: Playlist page is missing OpenGraph title, falling back ...ERROR: Unable to extract title; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type youtube-dl -U to update.Traceback (most recent call last):File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 1511, in _real_extract playlist_title = self._og_search_title(page)File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 428, in _og_search_titlereturn self._og_search_property('title', html, **kargs)File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 416, in _og_search_propertyescaped = self._search_regex(self._og_regexes(prop), html, name, flags=re.DOTALL, **kargs) File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 356, in _search_regexraise RegexNotFoundError(u'Unable to extract %s' % _name)RegexNotFoundError: Unable to extract OpenGraph title; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type youtube-dl -U to update.Traceback (most recent call last):File "/usr/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 493, in extract_info ie_result = ie.extract(url)File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 158, in extract return self._real_extract(url)File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 1517, in _real_extract r'<h1 class="pl-header-title">(.*?)</h1>', page, u'title')File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 366, in _html_search_regexres = self._search_regex(pattern, string, name, default, fatal, flags)File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 356, in _search_regexraise RegexNotFoundError(u'Unable to extract %s' % _name)RegexNotFoundError: Unable to extract title; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type youtube-dl -U to update.