I get a strange Traceback every 30 seconds or so

Traceback (most recent call last):
  File "/usr/lib/python3.4/asyncio/tasks.py", line 233, in _step
    result = coro.throw(exc)
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/helpers/entity_component.py", line 387, in _update_entity_states
    yield from update_coro
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/helpers/entity.py", line 216, in async_update_ha_state
    yield from self.hass.loop.run_in_executor(None, self.update)
  File "/usr/lib/python3.4/asyncio/futures.py", line 388, in __iter__
    yield self  # This tells Task to wait for completion.
  File "/usr/lib/python3.4/asyncio/tasks.py", line 286, in _wakeup
    value = future.result()
  File "/usr/lib/python3.4/asyncio/futures.py", line 277, in result
    raise self._exception
  File "/usr/lib/python3.4/concurrent/futures/thread.py", line 54, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/components/light/hue.py", line 397, in update
    self.update_lights(no_throttle=True)
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/util/__init__.py", line 296, in wrapper
    result = method(*args, **kwargs)
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/util/__init__.py", line 296, in wrapper
    result = method(*args, **kwargs)
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/components/light/hue.py", line 207, in update_lights
    lightgroups[lightgroup_id].schedule_update_ha_state()
  File "/srv/hass/hass_venv/lib/python3.4/site-packages/homeassistant/helpers/entity.py", line 290, in schedule_update_ha_state
    self.hass.add_job(self.async_update_ha_state(force_refresh))
AttributeError: 'NoneType' object has no attribute 'add_job'
17-01-24 18:19:37 homeassistant.core: Error doing job: Task exception was never retrieved

It just repeats over and over again. Every 30 seconds give or take a few. Doesn’t seem to affect anything but it’s been bugging me as it just came out of nowhere one day.

@itchaboy did you find a resolution to this problem?

I believe this was related to a hue component error? I think this has been fixed for me but I’ll have to double check (I end up blocking a lot of annoying errors)

Thanks, I’ve identified that my HA-bridge (for Hue emulation) is causing me some similar issues.