It is working now. I adjusted the json file to:
"amperae State of Charge": {
"topic": "wican/amperae/SOC",
"type": "243", "subtype": "6", "switchtype": "0",
"mapping": {"item": "SOC", "multiplier": 1}
},
"amperae Hv Capacity": {
"topic": "wican/amperae/HV_CAPACITY",
"type": "248", "subtype ...

This is what I get.

Thank you, I can see know that the SOC and HV_Capacity devices are made, only no values inside. Something wrong in my json config?
2026-02-01 14:59:03.821 Mapper: pluginV1::__init__
2026-02-01 14:59:03.821 Mapper: 'HardwareID': '50'
2026-02-01 14:59:03.821 Mapper: 'HomeFolder': '/opt/domoticz ...

I think it is working again. I did a full reboot off the rpi and know it is working again. I going to to test the rest now and let you know.

Yes I did, no luck. Could you as a test go back to the previous version?

The first time there were 2 mappers active, I deleted the second but still no luck.There are no devices created anymore.
026-02-01 11:32:30.032 Mapper: Pushing 'onHeartbeatCallback' on to queue
2026-02-01 11:32:30.082 Mapper: Processing 'onHeartbeatCallback' message
2026-02-01 11:32:30.083 Mapper ...

I think the mapper does not work anymore after the git pull. There is no update from the the devices anymore.
2026-01-31 11:30:24.376 Mapper: Debug logging mask set to: PYTHON PLUGIN QUEUE DEVICE CONNECTION MESSAGE
2026-01-31 11:30:24.377 Mapper: /opt/domoticz/userdata/plugins/MqttMapper ...

You’re right it looks that after the git pull something went wrong

part 2 logging
2026-01-30 14:26:30.564 Mapper: Calling message handler 'onMessage' on 'module' type object.
2026-01-30 14:26:31.983 Telefoon: RFXMeter (Bytes Send (MB))
2026-01-30 14:26:31.986 Telefoon: RFXMeter (Bytes Received (MB))
2026-01-30 14:26:31.988 Telefoon: General/Custom Sensor (TX mbps ...

This is the extra verbose logging
2026-01-30 14:26:29.700 Mapper: MqttClient::onDisconnect Disconnected from 192.168.178.50:1883
2026-01-30 14:26:29.700 Mapper: MqttClient::Close
2026-01-30 14:26:29.700 Mapper: onMQTTDisconnected
2026-01-30 14:26:29.799 Mapper: Worker thread started.
2026-01-30 14 ...

Yes I will do that. This weekend I will charge my car again and send you the logging. Thank you.

Yes i know dashticz and tried it but unfortunately I don’t have a background off it so for me it’s complicated. I used to have a dashboard from blauwe buis but he stopped with domoticz so that’s not maintenance any more.
I read that more user made the remark about the dashboard. For the rest I am ...

I am also a happy user off domoticz for a long time. Since I went to the docker image it is very stable. I agree with akamming that the user interface (dashboard) could be more WAF complient. But then again I do not have the skills to make it.

Ok thank you for the affort.

This is the extended logging from domoticz. I cannot see anything weird in it.
2026-01-24 13:50:40.277 Status: Startup Path: /opt/domoticz/
2026-01-24 13:50:40.402 Sunrise: 08:33:00 SunSet: 17:11:00
2026-01-24 13:50:40.402 Day length: 08:38:00 Sun at south: 12:52:00
2026-01-24 13:50:40.402 Civil ...

No there’s no error in domoticz log i will try to investigate this in the weekend. Perhaps the log level should be higher.
I will let you know what happens.

There's a strange thing in the log. MqttMapper says it'll create "amperae State of Charge" and "amperae Hv Capacity" devices but it seems it don't. Going deeper, this message is show at each MqttMapper startup.

Would it be possible to have a look into Domoticz log, to see if "Device creation" is ...

I made a new topic in the mapper config file the SOC for my car but the error in the domoticz log is"Error: Mapper: Can't find device key wican/amperae/SOC"
The wican module of my car gives in the mqtt explorer wican/amperae/SOC. I am on Version: 2025.2 (build 16836)

And the json file is ...

No it doesn’t appear in domoticz.

This is the logging when I am charging. I don’t see much difference in the logging.
| 2026-01-18 12:19:12.158 dzVents: Debug: - Domoticz: start
domoticz | 2026-01-18 12:19:12.201 Mapper: Debug logging mask set to: PYTHON PLUGIN
domoticz | 2026-01-18 12:19:12.202 Mapper: /opt/domoticz/userdata ...