ERROR: Signature extraction failed: Traceback (most recent call last): File «/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py», line 995, in _decrypt_signature video_id, player_url, s File «/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py», line 910, in _extract_signature_function res = self._parse_sig_js(code) File «/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py», line 973, in _parse_sig_js initial_function = jsi.extract_function(funcname) File «/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py», line 241, in extract_function raise ExtractorError('Could not find JS function %r' % funcname) ExtractorError: Could not find JS function u'ur'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output. (caused by ExtractorError(u"Could not find JS function u'ur'; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U 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; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.