Traceback (most recent call last):


 "C:\Python\Anaconda3\envs\rommel37\lib\site-packages\zmq\eventloop\zmqstream.py", line 462, in _handle_events

self._handle_recv()


 "C:\Python\Anaconda3\envs\rommel37\lib\site-packages\zmq\eventloop\zmqstream.py", line 492, in _handle_recv

self._run_callback(callback, msg)


 "C:\Python\Anaconda3\envs\rommel37\lib\site-packages\zmq\eventloop\zmqstream.py", line 444, in _run_callback

callback(*args, **kwargs)


 "C:\Python\Anaconda3\envs\rommel37\lib\site-packages\jupyter_client\threaded.py", line 92, in _handle_recv

msg = self.session.deserialize(smsg)


 "C:\Python\Anaconda3\envs\rommel37\lib\site-packages\jupyter_client\session.py", line 931, in deserialize

message['header'] = extract_dates(header)


 "C:\Python\Anaconda3\envs\rommel37\lib\site-packages\jupyter_client\jsonutil.py", line 64, in extract_dates

new_obj[k] = extract_dates(v)


 "C:\Python\Anaconda3\envs\rommel37\lib\site-packages\jupyter_client\jsonutil.py", line 69, in extract_dates

obj = parse_date(obj)


 "C:\Python\Anaconda3\envs\rommel37\lib\site-packages\jupyter_client\jsonutil.py", line 55, in parse_date

dt = _dateutil_parse(s)


 "C:\Python\Anaconda3\envs\rommel37\lib\site-packages\dateutil\parser\_parser.py", line 1374, in parse

return DEFAULTPARSER.parse(timestr, **kwargs)


 "C:\Python\Anaconda3\envs\rommel37\lib\site-packages\dateutil\parser\_parser.py", line 660, in parse

ret = self._build_tzaware(ret, res, tzinfos)


 "C:\Python\Anaconda3\envs\rommel37\lib\site-packages\dateutil\parser\_parser.py", line 1201, in _build_tzaware

aware = naive.replace(tzinfo=tz.UTC)
AttributeError: module 'dateutil.tz' has no attribute 'UTC'

Traceback (most recent call last):


 "/home/ch/uvloop/tests/test_tcp.py", line 1156, in test_ssl_connect_accepted_socket

self, server_context, client_context)


 "/home/ch/uvloop/tests/test_tcp.py", line 902, in test_connect_accepted_socket

loop.connect_accepted_socket(
AttributeError: '_UnixSelectorEventLoop' object has no attribute 'connect_accepted_socket'
