core: BMW Connected Drive gives "KeyError: 'executionStatus'" when locking

The problem

When toggling the lock.320d_xdrive_lock I get an error saying “Failed to call service lock/unlock: ‘executionStatus’”. The car is getting both locked and unlocked though, so the command is carried out.

Environment

• Home Assistant Core release with the issue: 108.9
• Last working Home Assistant Core release (if known): N/A
• Operating environment (Home Assistant/Supervised/Docker/venv): Docker on Ubuntu 18.0.4.4 LTS
• Integration causing this issue: BMW Connected Drive
• Link to integration documentation on our website: https://www.home-assistant.io/integrations/bmw_connected_drive/
• Car: BMW 320d xDrive G21

Problem-relevant configuration.yaml

bmw_connected_drive:
  name:
    username: user@domain.com
    password: P@ssw0rd
    region: rest_of_world

Traceback/Error logs

Logger: homeassistant.components.websocket_api.http.connection.139842909877392
Source: components/bmw_connected_drive/lock.py:88
Integration: websocket_api (documentation, issues)
First occurred: 3:51:43 PM (1 occurrences)
Last logged: 3:51:43 PM

'executionStatus'
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/websocket_api/commands.py", line 134, in handle_call_service
    connection.context(msg),
  File "/usr/src/homeassistant/homeassistant/core.py", line 1232, in async_call
    await asyncio.shield(self._execute_service(handler, service_call))
  File "/usr/src/homeassistant/homeassistant/core.py", line 1255, in _execute_service
    await handler.func(service_call)
  File "/usr/src/homeassistant/homeassistant/helpers/entity_component.py", line 213, in handle_service
    self._platforms.values(), func, call, required_features
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 412, in entity_service_call
    future.result()  # pop exception if have
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 600, in async_request_call
    await coro
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 443, in _handle_entity_call
    await result
  File "/usr/src/homeassistant/homeassistant/components/lock/__init__.py", line 109, in async_lock
    await self.hass.async_add_job(ft.partial(self.lock, **kwargs))
  File "/usr/local/lib/python3.7/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/src/homeassistant/homeassistant/components/bmw_connected_drive/lock.py", line 88, in lock
    self._vehicle.remote_services.trigger_remote_door_lock()
  File "/usr/local/lib/python3.7/site-packages/bimmer_connected/remote_services.py", line 87, in trigger_remote_door_lock
    result = self._block_until_done(_Services.REMOTE_DOOR_LOCK)
  File "/usr/local/lib/python3.7/site-packages/bimmer_connected/remote_services.py", line 142, in _block_until_done
    status = self._get_remote_service_status(service)
  File "/usr/local/lib/python3.7/site-packages/bimmer_connected/remote_services.py", line 165, in _get_remote_service_status
    return RemoteServiceStatus(json_result)
  File "/usr/local/lib/python3.7/site-packages/bimmer_connected/remote_services.py", line 47, in __init__
    status = response['executionStatus']
KeyError: 'executionStatus'

Additional information