Icloud Presence Detection - Error doing job: Future exception was never retrieved

Hello all,

i want to use presence detection with icloud 2 factor authentication.
When i restart my hass i will get without any problems my current location.
But i do not get any refresh locations.
When i open the log i get the following error:

Do anyone know what to do here?

Log Details (ERROR)
Fri Jan 18 2019 18:11:00 GMT+0100 (Mitteleuropäische Normalzeit)

Error doing job: Future exception was never retrieved
Traceback (most recent call last):
File “/usr/lib/python3.5/concurrent/futures/thread.py”, line 55, in run
result = self.fn(*self.args, **self.kwargs)
File “/usr/local/lib/python3.5/dist-packages/homeassistant/components/device_tracker/icloud.py”, line 332, in keep_alive
self.update_device(devicename)
File “/usr/local/lib/python3.5/dist-packages/homeassistant/components/device_tracker/icloud.py”, line 418, in update_device
battery = status.get(‘batteryLevel’, 0) * 100
TypeError: unsupported operand type(s) for *: ‘NoneType’ and ‘int’