Error while changing console from VNC to Telnet for Docker container

[grossmj]

Changing console from VNC to Telnet in node properties creates an "Address already in use" exception.

=> Server error from http://172.16.39.1:3080: Tinycore-1: Traceback (most recent call last):
  File "/usr/lib/python3.4/asyncio/base_events.py", line 823, in create_server
    sock.bind(sa)
OSError: [Errno 98] Address already in use

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/grossmj/PycharmProjects/gns3-server/gns3server/web/route.py", line 179, in control_schema
    yield from func(request, response)
  File "/home/grossmj/PycharmProjects/gns3-server/gns3server/handlers/api/docker_handler.py", line 291, in update
    yield from vm.update()
  File "/home/grossmj/PycharmProjects/gns3-server/gns3server/modules/docker/docker_vm.py", line 316, in update
    yield from self.start()
  File "/home/grossmj/PycharmProjects/gns3-server/gns3server/modules/docker/docker_vm.py", line 347, in start
    yield from self._start_console()
  File "/home/grossmj/PycharmProjects/gns3-server/gns3server/modules/docker/docker_vm.py", line 429, in _start_console
    self._telnet_servers.append((yield from asyncio.start_server(telnet.run, self._manager.port_manager.console_host, self.console)))
  File "/usr/lib/python3.4/asyncio/streams.py", line 101, in start_server
    return (yield from loop.create_server(factory, host, port, **kwds))
  File "/usr/lib/python3.4/asyncio/base_events.py", line 827, in create_server
    % (sa, err.strerror.lower()))
OSError: [Errno 98] error while attempting to bind on address ('172.16.39.1', 5002): address already in use