fix AttributeError: NoneType' object has no attribute 'ChangeDutyCycle #220
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Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1988, in wsgi_app
response = self.full_dispatch_request()
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1641, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1544, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1639, in full_dispatch_request
rv = self.dispatch_request()
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1625, in dispatch_request
return self.view_functionsrule.endpoint
File "/usr/local/lib/python2.7/dist-packages/flask_classy.py", line 200, in proxy
response = view(**request.view_args)
File "/home/pi/craftbeerpi3/modules/actor/init.py", line 39, in power
self.api.actor_power(id, power)
File "/home/pi/craftbeerpi3/modules/core/core.py", line 68, in actor_power
actor.instance.set_power(power=power)
File "/home/pi/craftbeerpi3/modules/base_plugins/gpio_actor/init.py", line 67, in set_power
self.p.ChangeDutyCycle(self.power)
AttributeError: 'NoneType' object has no attribute 'ChangeDutyCycle'