
Traceback (most recent call last):


 "/srv/app/venv/lib/python3.6/site-packages/tornado/web.py", line 1509, in _execute

result = method(*self.path_args, **self.path_kwargs)


 "/srv/app/venv/lib/python3.6/site-packages/jupyterhub/singleuser.py", line 129, in get

self.hub_auth.set_cookie(self, token)


 "/srv/app/venv/lib/python3.6/site-packages/jupyterhub/services/auth.py", line 492, in set_cookie

**kwargs


 "/srv/app/venv/lib/python3.6/site-packages/tornado/web.py", line 619, in set_secure_cookie

expires_days=expires_days, **kwargs)


 "/srv/app/venv/lib/python3.6/site-packages/tornado/web.py", line 548, in set_cookie

self._new_cookie[name] = value


 "/usr/lib/python3.6/http/cookies.py", line 521, in __setitem__

self.__set(key, rval, cval)


 "/usr/lib/python3.6/http/cookies.py", line 511, in __set

M.set(key, real_value, coded_value)


 "/usr/lib/python3.6/http/cookies.py", line 380, in set

raise CookieError('Illegal key %r' % (key,))

http.cookies.CookieError: Illegal key 'user-gunjan_baid@berkeley.edu'
```

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.