WARNING: Automatic signature extraction failed: Traceback (most recent call last):

 "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
video_id, player_url, len(s)

 "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 356, in _extract_signature_function
res = self._parse_sig_js(code)

 "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 424, in _parse_sig_js
u'Initial JS player signature function name')

 "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 356, in _search_regex
raise RegexNotFoundError(u'Unable to extract %s' % _name)RegexNotFoundError: Unable to extract Initial JS player signature function name; 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):

 "/Users/seth/.node-gyp/0.7/tools/gyp_addon", line 22, in <module>
rc = gyp.main(gyp_args)

 "/Users/seth/.node-gyp/0.7/tools/gyp/pylib/gyp/__init__.py", line 471, in main
options.circular_check)

 "/Users/seth/.node-gyp/0.7/tools/gyp/pylib/gyp/__init__.py", line 111, in Load
depth, generator_input_info, check, circular_check)

 "/Users/seth/.node-gyp/0.7/tools/gyp/pylib/gyp/input.py", line 2270, in Load
depth, check)

 "/Users/seth/.node-gyp/0.7/tools/gyp/pylib/gyp/input.py", line 361, in LoadTargetBuild

includes, True, check)

 "/Users/seth/.node-gyp/0.7/tools/gyp/pylib/gyp/input.py", line 216, in LoadOneBuild

None)

 "Makefile.gyp", line 7
MAKEFLAGS=-r
^SyntaxError: invalid syntax