NoneType error

[dwlee]

Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/home/dwlee/work/rocon_office/src/rocon_devices/rocon_hue/scripts/rocon_hue_bridge.py", line 63, in hue_checker
    self.bulb_checker()
  File "/home/dwlee/work/rocon_office/src/rocon_devices/rocon_hue/scripts/rocon_hue_bridge.py", line 100, in bulb_checker
    hue.name = state['name']
TypeError: 'NoneType' object has no attribute '__getitem__'