Registering mobile app causes error in person integration

[balloob]

@dshokouhi i get this in the log...

Error handling request
9:58 AM components/person/__init__.py (ERROR)

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/aiohttp/web_protocol.py", line 418, in start
    resp = await task
  File "/usr/local/lib/python3.7/site-packages/aiohttp/web_app.py", line 458, in _handle
    resp = await handler(request)
  File "/usr/local/lib/python3.7/site-packages/aiohttp/web_middlewares.py", line 119, in impl
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/real_ip.py", line 39, in real_ip_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/ban.py", line 72, in ban_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/auth.py", line 135, in auth_middleware
    return await handler(request)
  File "/usr/src/homeassistant/homeassistant/components/http/view.py", line 123, in handle
    result = await result
  File "/usr/src/homeassistant/homeassistant/components/http/data_validator.py", line 50, in wrapper
    result = await method(view, request, *args, **kwargs)
  File "/usr/src/homeassistant/homeassistant/components/mobile_app/http_api.py", line 80, in post
    DOMAIN, data=data, context={"source": "registration"}
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 109, in async_init
    result = await self._async_handle_step(flow, flow.init_step, data)
  File "/usr/src/homeassistant/homeassistant/data_entry_flow.py", line 172, in _async_handle_step
    result: Dict = await getattr(flow, method)(user_input)
  File "/usr/src/homeassistant/homeassistant/components/mobile_app/config_flow.py", line 47, in async_step_registration
    self.hass, user_input[CONF_USER_ID], devt_entry.entity_id
  File "/usr/src/homeassistant/homeassistant/components/person/__init__.py", line 108, in async_add_user_device_tracker
    if device_tracker_entity_id in device_trackers:
TypeError: argument of type 'NoneType' is not iterable

Originally posted by @tbar05 in #30565 (comment)

[balloob]

@tbar05 and @pangkoksiong, what persons do you have configured and when did you configure them (Home Assistant version). Would you be able to share your <config>/.storage/person file. Especially interested in the "device_trackers" field.

[pangapp]

my example as stated below. "device_trackers" is null.
{ "data": { "persons": [ { "device_trackers": null, "id": "2be2a63f90e44633befc4aecf271cc3a", "name": "admin", "user_id": "837df8f9b42246dd993a19e724dabfd4" } ] }, "key": "person", "version": 1 }

[pangapp]

The error went away after updating the "Track Device" in "Configuration->Persons"

[tbar05]

here is my .storage/person....

{ "data": { "items": [ { "device_trackers": [ "device_tracker.galaxy_s10", "device_tracker.sm_g973f_2" ], "id": "79639c3182bxxxxxxx2c95667afb2cc", "name": "tbar05", "user_id": "b9c2f65092xxxxxxxdaa63f833bb75b" } ] }, "key": "person", "version": 2 }

i also tried what @pangkoksiong said and re-selected device_tracker.galaxy_s10 in track device -> Configuration -> persons and now the app is working

[balloob]

When did you create your person, was this a long time ago ?

[tbar05]

@balloob yes it would have been a long time ago... i actually dont remember ever creating this person, is there a default person set up for the user login? ive been using HA for 18 months + so could have been that long ago

[balloob]

Found the issue, should work now for other people without having to edit persons in the UI first 👍