 Traceback (most recent call last):


 "/usr/lib/python3.7/urllib/request.py", line 1317, in do_open

encode_chunked=req.has_header('Transfer-encoding'))


 "/usr/lib/python3.7/http/client.py", line 1252, in request

self._send_request(method, url, body, headers, encode_chunked)


 "/usr/lib/python3.7/http/client.py", line 1298, in _send_request

self.endheaders(body, encode_chunked=encode_chunked)


 "/usr/lib/python3.7/http/client.py", line 1247, in endheaders

self._send_output(message_body, encode_chunked=encode_chunked)


 "/usr/lib/python3.7/http/client.py", line 1026, in _send_output

self.send(msg)


 "/usr/lib/python3.7/http/client.py", line 966, in send

self.connect()


 "/usr/lib/python3.7/http/client.py", line 1422, in connect

server_hostname=server_hostname)


 "/usr/lib/python3.7/ssl.py", line 423, in wrap_socket

session=session


 "/usr/lib/python3.7/ssl.py", line 870, in _create

self.do_handshake()


 "/usr/lib/python3.7/ssl.py", line 1139, in do_handshake

self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1076)

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

 "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 880, in _decrypt_signature
return func(s)

 "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 448, in <lambda>
return lambda s: initial_function([s])

 "/usr/local/lib/python2.7/site-packages/youtube_dl/jsinterp.py", line 113, in resf
res = self.interpret_statement(stmt, local_vars)

 "/usr/local/lib/python2.7/site-packages/youtube_dl/jsinterp.py", line 45, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)

 "/usr/local/lib/python2.7/site-packages/youtube_dl/jsinterp.py", line 58, in interpret_expression
val = local_vars[m.group('in')]KeyError: u'lo'