ValueError: Unable to guess signature from an empty dict

[sentry]

Sentry Issue: HM-CONFIG-8

ValueError: Unable to guess signature from an empty dict
  File "dbus/connection.py", line 609, in msg_reply_handler
    *message.get_args_list()))
  File "dbus/proxies.py", line 418, in _introspect_error_handler
    self._introspect_execute_queue()
  File "dbus/proxies.py", line 389, in _introspect_execute_queue
    proxy_method(*args, **keywords)
  File "dbus/proxies.py", line 139, in __call__
    **keywords)
  File "dbus/connection.py", line 586, in call_async
    message.append(signature=signature, *args)