Dashboard Help with Expander Card

I am working on a Dashboard that utilizes the expander-card found in HACS. I can’t seem to get it to work properly. The following yaml compiles properly but when I test it, none of the objects show. I’ve tried this with devices and objects but the result is the same. The code below is an example I copied from the Github site. And I’ve tested this in both safari and chrome but neither work.

Any thoughts are appreciated! - Lee

title: Expander Test Dashboard
views:
  - title: Test
    path: test
    cards:
      - type: custom:expander-card
        child-margin-top: 0.6em
        padding: 0
        clear: true
        title-card-button-overlay: true
        title-card-clickable: true
        expanded: true
        title-card:
          type: custom:digital-clock
          dateFormat:
            weekday: long
            day: 2-digit
            month: short
          timeFormat:
            hour: 2-digit
            minute: 2-digit
        cards:
          - type: custom:simple-weather-card
            entity: weather.openweathermap
            primary_info:
              - wind_speed
              - wind_bearing
            secondary_info:
              - precipitation
              - precipitation_probability
          - type: custom:hourly-weather
            entity: weather.openweathermap
            icons: true
            show_precipitation_probability: true
            show_precipitation_amounts: true
            forecast_type: hourly
            num_segments: 10"
            label_spacing: '1'
            name: null
            show_wind: speed

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