use ImportError that is compatible with python 3.5

modules/base_plugins/gpio_actor/__init__.py

@@ -10,7 +10,7 @@ try:
     import RPi.GPIO as GPIO  # pylint: disable=import-error
 
     GPIO.setmode(GPIO.BCM)
-except ModuleNotFoundError as exp:
+except ImportError as exp:
     print(exp)