Automation blocks on unavailable device

Configuration
1

I have a temp sensor that sometimes goes offline.
as I have to start a timer depending on the temperature I’ve used a Case.
The issue is that when the sensor is offline the default actions is not executed as the script is terminated with error:

Executed: August 2, 2022 at 4:41:31 PM
Result:

result: false

## entity_id/0

Executed: August 2, 2022 at 4:41:31 PM
Result:

result: false message: value 'unavailable' is non-numeric and treated as False

here is the script:

alias: Piscina Pump Schedule
description: ''
trigger:
  - platform: event
    event_type: timer.finished
    event_data:
      entity_id: timer.piscina_prerun
condition: []
action:
  - service: notify.piscinalog
    data:
      message: Piscina Pump Schedule
      title: Piscina Pump Schedule
  - service: notify.whatsapp
    data:
      message: The temperature is {{ states('sensor.sonoff_10001c5cd2_temperature') }}
  - condition: numeric_state
    entity_id: sensor.sonoff_10001c5cd2_temperature
    above: '12'
  - choose:
      - conditions:
          - condition: numeric_state
            entity_id: sensor.sonoff_10001c5cd2_temperature
            above: '12'
            below: '20'
        sequence:
          - service: timer.start
            data:
              duration: '02:45:00'
            target:
              entity_id: timer.piscina
          - service: notify.piscinalog
            data:
              message: >-
                The temperature is {{
                states('sensor.sonoff_10001c5cd2_temperature') }} - 02:45:00.
              title: Piscina Pump Schedule - On
      - conditions:
          - condition: numeric_state
            entity_id: sensor.sonoff_10001c5cd2_temperature
            above: '20'
            below: '25'
        sequence:
          - service: timer.start
            data:
              duration: '06:45:00'
            target:
              entity_id: timer.piscina
          - service: notify.piscinalog
            data:
              message: >-
                The temperature is {{
                states('sensor.sonoff_10001c5cd2_temperature') }} - 06:45:00.
              title: Piscina Pump Schedule - On
      - conditions:
          - condition: numeric_state
            entity_id: sensor.sonoff_10001c5cd2_temperature
            above: '25'
            below: '28'
        sequence:
          - service: timer.start
            data:
              duration: '08:45:00'
            target:
              entity_id: timer.piscina
          - service: notify.piscinalog
            data:
              message: >-
                The temperature is {{
                states('sensor.sonoff_10001c5cd2_temperature') }} - 08:45:00.
              title: Piscina Pump Schedule - On
      - conditions:
          - condition: numeric_state
            entity_id: sensor.sonoff_10001c5cd2_temperature
            above: '28'
            below: '45'
        sequence:
          - service: timer.start
            data:
              duration: '09:45:00'
            target:
              entity_id: timer.piscina
          - service: notify.piscinalog
            data:
              message: >-
                The temperature is {{
                states('sensor.sonoff_10001c5cd2_temperature') }} - 10:45:00.
              title: Piscina Pump Schedule - On
    default:
      - service: notify.piscinalog
        data:
          message: >-
            The temperature is {{ states('sensor.sonoff_10001c5cd2_temperature')
            }} - Error.
          title: Piscina Pump Schedule - On
      - service: timer.start
        data:
          duration: '03:45:00'
        target:
          entity_id: timer.piscina
mode: single
2

Found a solution using an IF THEN with template

 - if:
      - condition: template
        value_template: >-
          {{ states('sensor.sonoff_10001c5cd2_temperature') not in
          ['unavailable'] }}
    then:
      - condition: numeric_state
        entity_id: sensor.sonoff_10001c5cd2_temperature
        above: '12'