Getting error Unable to determine action @ data['actions'][1]

[elder locust]

I'm trying to setup a zigbee button to increase brightness of all lights tagged "living room lamps" to 100% and then decrease to 0% and repeat as long as the button is on continuous press.

What am I doing wrong and how can I do this better?

description: Dim lights continuously, then brighten to max on long press
mode: single
triggers:
  - device_id: f8f65cd72f0f23f8d845c7fbc2911935
    domain: zha
    type: remote_button_long_press
    subtype: button_4
    trigger: device
conditions: []
actions:
  - service: light.turn_on
    data:
      brightness_pct: 0
    target:
      label_id: living_room_lamps 
  - loop:
      count: 100
      sequence:
        - delay: 0.1
        - service: light.turn_on
          data:
            brightness_pct: "{{ (loop.index - 1) | float / loop.count * 100 }}"
          target:
            entity_id: 
              - light.b1
              - light.b2
              - light.b3
              - light.living_room_overhead
  - service: light.turn_on
    data:
      brightness_pct: 100
    target:
      label_id: living_room_lamps 
  - loop:
      count: 100
      sequence:
        - delay: 0.1
        - service: light.turn_on
          data:
            brightness_pct: "{{ (loop.count - loop.index) | float / loop.count * 100 }}"
          target:
            entity_id: 
              - light.b1
              - light.b2
              - light.b3
              - light.living_room_overhead

[languid steppe]

Please format it properly

[hard ravine]

To format your text as code, enter three backticks on the first line, press Enter for a new line, paste your code, press Enter again for another new line, and lastly three more backticks.
```yaml
example: here
```
Don't forget you can edit your post rather than repeatedly posting the same thing.

[elder locust]

oh shoot, on it