Philips Hue, two entrance in configuration needed?

Configuration
1 
Do you need BOTH

hue:
  bridges:
    - host: BRIDGE1_IP_ADDRESS
      filename: phue.conf

and

light:
  - platform: hue
    host: DEVICE_IP_ADDRES

or just hue: ?

2

I put first and receive this error

2017-12-21 11:40:41 ERROR (MainThread) [homeassistant.components.sensor] Error while setting up platform hue
Traceback (most recent call last):
File “/usr/lib/python3.6/site-packages/homeassistant/helpers/entity_component.py”, line 171, in _async_setup_platform
SLOW_SETUP_MAX_WAIT, loop=self.hass.loop)
File “/usr/lib/python3.6/asyncio/tasks.py”, line 358, in wait_for
return fut.result()
File “/usr/lib/python3.6/asyncio/futures.py”, line 245, in result
raise self._exception
File “/usr/lib/python3.6/concurrent/futures/thread.py”, line 56, in run
result = self.fn(*self.args, **self.kwargs)
File “/config/custom_components/sensor/hue.py”, line 25, in setup_platform
url = hass.data[DOMAIN] + ‘/sensors’
KeyError: ‘hue’

3

I took out everything, now I have no errors but the philips hue bridge is not discovered by HASSIO … options?

4

I am on 0.60 and the philips hue bridge is not discovered