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

 "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 877, in _decrypt_signature
video_id, player_url, len(s)

 "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 352, in _extract_signature_function
player_type = id_m.group('ext')AttributeError: 'NoneType' object has no attribute 'group'
Traceback (most recent call last):


 "/home/huy/.local/lib/python3.6/site-packages/urllib3/connection.py", line 160, in _new_conn

(self._dns_host, self.port), self.timeout, **extra_kw


 "/home/huy/.local/lib/python3.6/site-packages/urllib3/util/connection.py", line 84, in create_connection

raise err


 "/home/huy/.local/lib/python3.6/site-packages/urllib3/util/connection.py", line 74, in create_connection

sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused
