Running the following versions on my NUC

• Core - 2024.2.0
• Supervisor - 2024.01.1
• Operating System - 11.5
• Frontend - 20240207.0

 

I have a node function that looks like this
 

//var fulltopic
msg.topic = "homeassistant/sensor/SunSynk" + "/" + "/" + msg.shorttopic + "/" + "config";
msg.topic = msg.topic.replace("//", "/");
msg.payload = {
  "unit_of_measurement": msg.unit,
  "state_topic": "homeassistant/sensor/SunSynk" + "/" + msg.shorttopic + "/" + "value",
  "name": "SunSynk_" + msg.shorttopic,
  "unique_id": msg.shorttopic,
  //"state_class": msg.state_class,
  //"last_reset_topic": "SunSynk/lastreset",
  //"last_reset_value_template": "1970-01-01T00:00:00+00:00",
   "device": {
    "identifiers": [
      "SunSynk"
    ],
    "name": "SunSynk",
    "model": "SynSynk",
    "manufacturer": "SunSynk"
  }  
}
  if ((msg.deviceclass != "") && (msg.deviceclass != "none"))  {
     msg.payload.device_class = msg.deviceclass
  }
return msg;

But I'm getting the following errors in the log. 

 

Logger: homeassistant.components.mqtt.models
Source: components/mqtt/models.py:305
Integration: MQTT (documentation, issues)
First occurred: 12:39:41 PM (6 occurrences)
Last logged: 12:39:43 PM

Exception raised when updating state of sensor.sunsynk_total_load, topic: 'homeassistant/sensor/SunSynk/total_load/value' with payload: b'1600'
Exception raised when updating state of sensor.sunsynk_load_grid_inverter, topic: 'homeassistant/sensor/SunSynk/load_grid_inverter/value' with payload: b'89'
Exception raised when updating state of sensor.sunsynk_grid_load_calc, topic: 'homeassistant/sensor/SunSynk/grid_load_calc/value' with payload: b'-63'
Exception raised when updating state of sensor.sunsynk_grid_ct, topic: 'homeassistant/sensor/SunSynk/grid_ct/value' with payload: b'15'
Exception raised when updating state of sensor.sunsynk_grid_load_calc, topic: 'homeassistant/sensor/SunSynk/grid_load_calc/value' with payload: b'-74'
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/mqtt/models.py", line 305, in process_write_state_requests
    entity.async_write_ha_state()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 989, in async_write_ha_state
    self._async_write_ha_state()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 1110, in _async_write_ha_state
    state, attr, capabilities, shadowed_attr = self.__async_calculate_state()
                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 1049, in __async_calculate_state
    attr.update(self.state_attributes or {})
                ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/sensor/__init__.py", line 453, in state_attributes
    raise ValueError(
ValueError: Entity sensor.sunsynk_solar_pv2_volts (<class 'homeassistant.components.mqtt.sensor.MqttSensor'>) with state_class None has set last_reset. Setting last_reset for entities with state_class other than 'total' is not supported. Please update your configuration if state_class is manually configured.

Any ideas?

Fixed this by changing "state_class" value to "total" (as shown bellow).

It was and issue related to this.
https://github.com/home-assistant/core/issues/112723