Traceback (most recent call last):


 "/home/george.trojan/miniconda3/envs/python-3.7/lib/python3.7/site-packages/tornado/ioloop.py", line 743, in _run_callback

ret = callback()


 "/home/george.trojan/miniconda3/envs/python-3.7/lib/python3.7/site-packages/tornado/ioloop.py", line 767, in _discard_future_result

future.result()


 "/home/george.trojan/miniconda3/envs/python-3.7/lib/python3.7/site-packages/distributed/nanny.py", line 390, in _on_exit

await self.scheduler.unregister(address=self.worker_address)


 "/home/george.trojan/miniconda3/envs/python-3.7/lib/python3.7/site-packages/distributed/core.py", line 757, in send_recv_from_rpc

result = await send_recv(comm=comm, op=key, **kwargs)


 "/home/george.trojan/miniconda3/envs/python-3.7/lib/python3.7/site-packages/distributed/core.py", line 556, in send_recv

raise exc.with_traceback(tb)


 "/home/george.trojan/miniconda3/envs/python-3.7/lib/python3.7/site-packages/distributed/core.py", line 408, in handle_comm

result = handler(comm, **msg)


 "/home/george.trojan/miniconda3/envs/python-3.7/lib/python3.7/site-packages/distributed/scheduler.py", line 2135, in remove_worker

address = self.coerce_address(address)


 "/home/george.trojan/miniconda3/envs/python-3.7/lib/python3.7/site-packages/distributed/scheduler.py", line 4844, in coerce_address

raise TypeError("addresses should be strings or tuples, got %r" % (addr,))
TypeError: addresses should be strings or tuples, got None

Traceback (most recent call last):


 "/usr/lib/python3/dist-packages/urllib3/connection.py", line 169, in _new_conn

conn = connection.create_connection(


 "/usr/lib/python3/dist-packages/urllib3/util/connection.py", line 96, in create_connection

raise err


 "/usr/lib/python3/dist-packages/urllib3/util/connection.py", line 86, in create_connection

sock.connect(sa)


 "/usr/lib/python3/dist-packages/gevent/_socket3.py", line 407, in connect

raise error(err, strerror(err))
ConnectionRefusedError: [Errno 111] Connection refused
