History stats sensor stopped working

Hi,

one of my sensors seems to stopped working with some of the latest updates.

sensor:
  - platform: time_date
    display_options:
      - 'time'
  - platform: history_stats
    name: Brenner History
    entity_id: switch.brenner
    state: 'on'
    type: time
    start: '{{ 0 }}'
    end: '{{ now() }}'
  - platform: template
    sensors:
      brenner_laufzeit:
        friendly_name: 'Brenner Laufzeit'
        value_template: "{{ state_attr('sensor.brenner_history', 'value') }}"

There are no log entrys and the sensor stays on „unknown“.
Last time it definitely worked was in May.

OK, i just saw that the history sensor is working fine, but the Laufzeit inside the UI its just unknown instead of x minutes. So I guess it has something to do with the value template.

None of my history stats sensor have a value attribute, just use the state.

  - platform: template
    sensors:
      brenner_laufzeit:
        friendly_name: 'Brenner Laufzeit'
        value_template: "{{ states('sensor.brenner_history') }}"
1 Like

Yep, that was it. Thanks alot :blush:.