Response variable for my kids chores

Configuration
1

I’m trying to create chorse for my kids on my google calender. The automation i want to run with it when my kids press there aqara button it will trigger our “nest hub” to tell them there chores for today while i get my work done. I get this error of my response variable is wrong. I have created the script first before i add it to the automation. This is my script :

alias: "Chore "
sequence:
  - service: calendar.list_events
    data:
      start_date_time: "{{ now().strftime('%Y-%m-%d') }}"
      end_date_time: "{{ now().strftime('%Y-%m-%d') }}"
    target:
      entity_id: calendar.clean_the_table
  - choose:
      - conditions:
          - condition: template
            value_template: "{{ state_attr('calendar.clean_the_table', 'message') }}"
        sequence:
          - service: tts.speak
            data:
              cache: true
              media_player_entity_id: media_player.nest_hub_kitchen
              message: >-
                Next chore is {{ state_attr('calendar.clean_the_table',
                'message') }}
            target:
              entity_id: tts.google_en_com
    default:
      - service: tts.speak
        data:
          cache: true
          message: No chore scheduled for today
          media_player_entity_id: media_player.nest_hub_kitchen
        target:
          entity_id: tts.google_en_com
mode: single
icon: mdi:spray-bottle