Buttons not visible in UI

Hello all, My response buttons are not visible in Streamlit UI. What’s the issue. I am defining buttons in following way:

  utter_facility_info:
    - text: "The emergency department provides a range of services: Trauma Care, Cardiac Care, Pediatric Care, Urgent Care, Critical Care"
      buttons:
      - title: Trauma Care
        payload: /trauma_care
      - title: Cardiac Care
        payload: /cardiac_care
      - title: Pediatric Care
        payload: /pediatric_care
      - title: Urgent Care
        payload: /urgent_care_inquiry
      - title: Critical Care
        payload: /critical_care_inquiry

I am linking predefined intents. Please help.