Automation not work

Hello, I’m quite newbie for home assistant,
I create the utility meter, and I made the automation (taking from various site) but when I check the configuration I receive this:

alias: Energy Tariff
description: ""
trigger:
  - platform: time
    id: "7"
    at: "07:00:00"
    variables:
      tariff: F2
  - platform: time
    id: "8"
    at: "08:00:00"
    variables:
      tariff: F1
  - platform: time
    id: "19"
    at: "19:00:00"
    variables:
      tariff: F2
  - platform: time
    id: "23"
    at: "23:00:00"
    variables:
      tariff: F3
condition: []
action:
  - if:
      - condition: state
        entity_id: binary_sensor.workday_sensor
        state: "off"
    then:
      - service: select.select_option
        data:
          option: F3
        target:
          entity_id: select.energy_tariff
    else:
      - choose:
          - conditions:
              - condition: trigger
                id: "7"
            sequence:
              - condition: time
                weekday:
                  - mon
                  - tue
                  - wed
                  - thu
                  - fri
                  - sat
              - service: select.select_option
                target:
                  entity_id: select.energy_tariff
                data:
                  option: "{{ tariff }}"
          - conditions:
              - condition: trigger
                id: "8"
            sequence:
              - condition: time
                weekday:
                  - mon
                  - tue
                  - wed
                  - thu
                  - fri
              - service: select.select_option
                target:
                  entity_id: select.energy_tariff
                data:
                  option: "{{ tariff }}"
          - conditions:
              - condition: trigger
                id: "19"
            sequence:
              - condition: time
                weekday:
                  - mon
                  - tue
                  - wed
                  - thu
                  - fri
              - service: select.select_option
                target:
                  entity_id: select.energy_tariff
                data:
                  option: "{{ tariff }}"
          - conditions:
              - condition: trigger
                id: "23"
            sequence:
              - service: select.select_option
                target:
                  entity_id: select.energy_tariff
                data:
                  option: "{{ tariff }}"
mode: single

Can someone explain to me what Happen?
THX

Questions Guidelines #11 & 14