Hue error in log after startup when discory is enabled

'hass.io

0.64.0’

not new has been this way for 2 prev versions

if you disable discovery no errors

'2018-02-26 09:36:32 ERROR (MainThread) [homeassistant.core] Error doing job: Future exception was never retrieved
Traceback (most recent call last):
File “/usr/lib/python3.6/concurrent/futures/thread.py”, line 56, in run
result = self.fn(*self.args, **self.kwargs)
File “/usr/lib/python3.6/site-packages/homeassistant/components/hue.py”, line 85, in
bridge_discovered(hass, service, discovery_info))
File “/usr/lib/python3.6/site-packages/homeassistant/components/hue.py”, line 132, in bridge_discovered
setup_bridge(host, hass, filename)
File “/usr/lib/python3.6/site-packages/homeassistant/components/hue.py”, line 144, in setup_bridge
bridge.setup()
File “/usr/lib/python3.6/site-packages/homeassistant/components/hue.py”, line 194, in setup
config_file_path=self.hass.config.path(self.filename))
File “/usr/lib/python3.6/site-packages/phue.py”, line 629, in init
self.connect()
File “/usr/lib/python3.6/site-packages/phue.py”, line 752, in connect
self.register_app()
File “/usr/lib/python3.6/site-packages/phue.py”, line 706, in register_app
response = self.request(‘POST’, ‘/api’, registration_request)
File “/usr/lib/python3.6/site-packages/phue.py”, line 667, in request
return json.loads(response.decode(‘utf-8’))
File “/usr/lib/python3.6/json/init.py”, line 354, in loads
return _default_decoder.decode(s)
File “/usr/lib/python3.6/json/decoder.py”, line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File “/usr/lib/python3.6/json/decoder.py”, line 357, in raw_decode
raise JSONDecodeError(“Expecting value”, s, err.value) from None

thank you