Bonjour et merci @Jeandhom et @guirem.
Voici un extrait des logs :
[2020-12-15 18:03:27][DEBUG] : SCANNER------ Start scanning... (schedule)
[2020-12-15 18:03:27][DEBUG] : MEMORY---- Total CPU time used : 820.712s (0.33%) | Last 62 sec : 0.176s (0.28%) | Memory : 41 Mo
[2020-12-15 18:03:51][DEBUG] : SOCKETHANDLER------Client connected to [127.0.0.1:52662]
[2020-12-15 18:03:51][DEBUG] : SOCKETHANDLER------Message read from socket: {"apikey": "XXXXXXXXXXXXX", "cmd": "nowplaying", "uuid": "39cce3fa-36ec-21f2-0b19-1c2853f880e1"}
[2020-12-15 18:03:51][DEBUG] : SOCKETHANDLER------Client disconnected from [127.0.0.1:52662]
[2020-12-15 18:03:52][DEBUG] : SOCKET-READ------Message received in socket JEEDOM_SOCKET_MESSAGE
[2020-12-15 18:03:52][DEBUG] : SOCKET-READ------Received command from jeedom : nowplaying
[2020-12-15 18:03:52][DEBUG] : SOCKET-READ------Now playing activated for 39cce3fa-36ec-21f2-0b19-1c2853f880e1
[2020-12-15 18:04:00][DEBUG] : SOCKETHANDLER------Client connected to [127.0.0.1:52682]
[2020-12-15 18:04:00][DEBUG] : SOCKETHANDLER------Message read from socket: {"apikey": "XXXXXXXXXXXXX", "cmd": "action", "device": {"uuid": "39cce3fa-36ec-21f2-0b19-1c2853f880e1", "source": "googlecast"}, "command": [{"cmd": "radio_ouifm_60s"}]}
[2020-12-15 18:04:00][DEBUG] : SOCKETHANDLER------Client disconnected from [127.0.0.1:52682]
[2020-12-15 18:04:00][DEBUG] : SOCKET-READ------Message received in socket JEEDOM_SOCKET_MESSAGE
[2020-12-15 18:04:00][DEBUG] : SOCKET-READ------Received command from jeedom : action
[2020-12-15 18:04:00][DEBUG] : SOCKET-READ------Attempt an action on a device
[2020-12-15 18:04:00][DEBUG] : SOCKET-READ------Action Thread Launched
[2020-12-15 18:04:00][DEBUG] : ACTION------ action - radio_ouifm_60s - 39cce3fa-36ec-21f2-0b19-1c2853f880e1 - None - none
[2020-12-15 18:04:00][DEBUG] : ACTION------Action radio_ouifm_60s not implemented or exception occured !
[2020-12-15 18:04:00][DEBUG] : SENDER------Send to jeedom : {'uuid': '39cce3fa-36ec-21f2-0b19-1c2853f880e1', 'nowplaying': {'uuid': '39cce3fa-36ec-21f2-0b19-1c2853f880e1', 'online': True, 'is_active_input': False, 'is_stand_by': False, 'display_name': 'CMD UNKNOWN', 'status_text': 'CMD UNKNOWN', 'player_state': 'CMD UNKNOWN', 'title': '', 'album_artist': '', 'album_name': '', 'current_time': 0, 'artist': '', 'image': None, 'series_title': '', 'season': '', 'episode': '', 'stream_type': '', 'track': ''}}
[2020-12-15 18:04:00][DEBUG] : SENDER------Send to jeedom : {'devices': {'39cce3fa-36ec-21f2-0b19-1c2853f880e1': {'uuid': '39cce3fa-36ec-21f2-0b19-1c2853f880e1', 'typemsg': 'error', 'status': {'uuid': '39cce3fa-36ec-21f2-0b19-1c2853f880e1', 'display_name': 'CMD UNKNOWN', 'status_text': 'CMD UNKNOWN'}}}}
[2020-12-15 18:04:00][DEBUG] : JEEDOMCHROMECAST------ Detected changes in status of Séjour
[2020-12-15 18:04:00][DEBUG] : SENDER------Send to jeedom : {'devices': {'39cce3fa-36ec-21f2-0b19-1c2853f880e1': {'uuid': '39cce3fa-36ec-21f2-0b19-1c2853f880e1', 'status': {'uuid': '39cce3fa-36ec-21f2-0b19-1c2853f880e1', 'uri': '192.168.0.6:8009', 'friendly_name': 'Séjour', 'is_active_input': False, 'is_stand_by': False, 'volume_level': 40, 'volume_muted': False, 'app_id': None, 'icon_url': None, 'display_name': '', 'status_text': ' ', 'is_busy': False, 'title': '', 'artist': '', 'series_title': '', 'stream_type': 'UNKNOWN', 'player_state': 'UNKNOWN'}, 'typemsg': 'info', 'lastOnline': 1608046046, 'online': True, 'lastSent': 1608051840, 'lastOfflineSent': 1608046011, 'options': {'ignore_CEC': '0'}, 'lastScan': 1608051807}}}
[2020-12-15 18:04:28][DEBUG] : SCANNER------ Start scanning... (schedule)
[2020-12-15 18:04:28][DEBUG] : MEMORY---- Total CPU time used : 820.934s (0.33%) | Last 61 sec : 0.222s (0.36%) | Memory : 41 Mo
[2020-12-15 18:05:06][DEBUG] : ZEROCONF------ Signal detected from chromecast on zeroconf network : Séjour
[2020-12-15 18:05:10][DEBUG] : SENDER------Send to jeedom : {'heartbeat': 1, 'source': 'local'}
Je trouve qu’il y a beaucoup de messages et tout le temps. Je vais prendre 5 minutes pour regarder ce que cela signifie. Mais si tu as une idée, je prends bien sûr.
Pour la virgule en trop à la fin du fichier, je crois bien que tu as mis le doigt dessus. Je viens de la retirer, forcément ça marche beaucoup mieux.
Merci beaucoup pour votre aide. Je marque la réponse de @Jeandhom comme étant la solution.