[BUG] Unstability warning in HA logs

[vistalba]

After restart HA I got this in HA logs:

Logger: homeassistant.util.async_
Source: util/async_.py:120
First occurred: 23:23:37 (8 occurrences)
Last logged: 23:23:38

Detected I/O inside the event loop. This is causing stability issues. Please report issue to the custom component author for miele doing I/O at custom_components/miele/miele_at_home.py, line 128: refresh_token=self._token['refresh_token'])
Detected I/O inside the event loop. This is causing stability issues. Please report issue to the custom component author for miele doing I/O at custom_components/miele/miele_at_home.py, line 21: devices = self._session._session.get(MieleClient.DEVICES_URL, params={'language':lang})