Unable to Create a Trigger-based Sensor in a Separate File

Hello,
I am struggling to create a trigger-based sensor that is defined in a separate YAML file.
Configuration Details
In my configuration.yaml, I have the following entry:

template: !include_dir_list template

I have a folder where I store multiple YAML files, each defining different sensors:
:open_file_folder: config/template/

Inside this folder, I have a file ‘weather_forecast_card.yaml’ with the following content. However, the sensor does not appear in Home Assistant.

- trigger:
    - platform: time_pattern
      hours: /1
    - platform: homeassistant
      event: start
  action:
    - service: weather.get_forecasts
      target:
        entity_id: weather.forecast_home
      data:
        type: daily
      response_variable: daily
  sensor:
    - name: Weather Forecast Dashboard Card
      unique_id: weather_forecast_dashboard_card
      state: "Something File"
      attributes: some attributes .... 

If I remove the trigger section and start the file directly with the sensor definition, the sensor appears in the Developer Tools.

What am i doing wrong ?

Read the documentation. For the way you have formatted your separate configuration file, as a list, you are using the wrong include type.

Each file contains a list:

  • !include_dir_merge_list will return the content of a directory as a list by merging all files (which should contain a list) into 1 big list.

Each file contains a list entry, i.e. a dict:

  • !include_dir_list will return the content of a directory as a list with each file content being an entry in the list. The list entries are ordered based on the alphanumeric ordering of the names of the files.

Thank you for the help.
I am new to Home Assistant.
I spend the time reading and learning and it works fine with !include_dir_merge_list

Thanks again