This was working for weeks until today. Suddenly lost all my hue lights. Just updated to 0.66.1.
Error while setting up platform hue
Traceback (most recent call last):
File “/usr/lib/python3.6/site-packages/homeassistant/helpers/entity_platform.py”, line 82, in async_setup
SLOW_SETUP_MAX_WAIT, loop=hass.loop)
File “/usr/lib/python3.6/asyncio/tasks.py”, line 358, in wait_for
return fut.result()
File “/usr/lib/python3.6/site-packages/homeassistant/components/light/hue.py”, line 56, in async_setup_platform
bridge = hass.data[hue.DOMAIN][discovery_info[‘host’]]
KeyError: ‘host’
And did you read the release nodes, section “breaking changes”? Property “host” in hue is no longer optional and even worse - it has to be an IP address, not a DNS name.