Traceback (most recent call last):

 "<string>", line 1, in <module>

 "./urllib/request.py", line 156, in urlopen

 "./urllib/request.py", line 469, in open

 "./urllib/request.py", line 492, in _open

 "./urllib/request.py", line 447, in _call_chain

 "./urllib/request.py", line 1310, in unknown_openurllib.error.URLError: <urlopen error unknown url type: https>
Traceback (most recent call last):de an HTTP2 stream is not supported.")ions.")

 "/usr/lib/python2.7/site-packages/mitmproxy/proxy/server.py", line 121, in handlell__
root_layer()rce_conn.h2.receive_data(raw_frame)tmproxy/mitmproxy

 "/usr/lib/python2.7/site-packages/mitmproxy/proxy/modes/http_proxy.py", line 11, in __call__
layer()me in self.incoming_buffer:

 "/usr/lib/python2.7/site-packages/mitmproxy/protocol/tls.py", line 358, in __call__
layer()f._update_header_buffer(f)

 "/usr/lib/python2.7/site-packages/mitmproxy/protocol/http1.py", line 67, in __call__uffer
layer()eaders_buffer.append(f)

 "/usr/lib/python2.7/site-packages/mitmproxy/protocol/http.py", line 171, in __call__
self.handle_regular_mode_connect(request)

 "/usr/lib/python2.7/site-packages/mitmproxy/protocol/http.py", line 263, in handle_regular_mode_connect
layer()e a bug report at: https://github.com/mitmproxy/mitmproxy

 "/usr/lib/python2.7/site-packages/mitmproxy/protocol/tls.py", line 358, in __call__
layer()

 "/usr/lib/python2.7/site-packages/mitmproxy/protocol/http2.py", line 234, in __call__
events = source_conn.h2.receive_data(raw_frame)

 "/usr/lib/python2.7/site-packages/h2/connection.py", line 1142, in receive_data
for frame in self.incoming_buffer:

 "/usr/lib/python2.7/site-packages/h2/frame_buffer.py", line 172, in next
f = self._update_header_buffer(f)

 "/usr/lib/python2.7/site-packages/h2/frame_buffer.py", line 131, in _update_header_buffer
self._headers_buffer.append(f)AttributeError: 'NoneType' object has no attribute 'append'