Restful template sensor data - auto reload on HA restart

Configuration
1

I have a template sensor which retrieves its data via rest call.
The rest api is configured to be called once per day.

This all works fine:-

This is the extract from my sensors.yaml:-

- platform: rest
  name: bin_collection_restful
  resource: https://somewebsite
  timeout: 15
  scan_interval: 86400
  json_attributes:
    - label
    - Results
  value_template: 'OK'

And this is the template sensor based off that:-

- sensor:
    - name: "Black Bin Collection Date"
      unique_id: black_bin_collection_date
      state: >
        {% set blackbin_date  = states.sensor.bin_collection_restful.attributes["Results"].split('Your rubbish')[1].split('<br/>')[1].split('</em>')[0] %}
        {{blackbin_date}}

The problem is that the sensor loses its value when HA restarts.

I’ve tried this in dev tools, but nothing happens:-

service: homeassistant.update_entity
data: {}
target:
  entity_id:
    - sensor.black_bin_collection_date

I was hoping I could use trigger this service call in an automation triggered by HA start, but as it does nothing in dev tools, I’m stuck.

Help!

2

Looks like the issue was actually with my entity name. It had somehow got confused with an identical copy but named sensor.black_bin_collection_date2

That revealed 2 things:-

The restful sensor data wasn’t getting lost on an HA restart.
And yes, infact that service call does work!