ERROR d'enregistrement dans HA

Bonsoir,
j’ai une erreur permanante les « journaux » de HA

2021-12-22 00:21:08 ERROR (Recorder) [homeassistant.components.recorder.util] Error executing query: 'charmap' codec can't encode character '\u03c6' in position 4: character maps to <undefined>

2021-12-22 00:21:08 ERROR (Recorder) [homeassistant.components.recorder] Error while processing event StatisticsTask(start=datetime.datetime(2021, 12, 21, 16, 50, tzinfo=datetime.timezone.utc)): 'charmap' codec can't encode character '\u03c6' in position 4: character maps to <undefined>

Quelqu’un peut me renseigner ?
Merci