button-card: button card templates fail to load randomly

Checklist

• [x ] I updated the card to the latest version available
• [x ] I cleared the cache of my browser

Describe the bug I get the following at random times, it takes several refreshes or HA restart to fix the error

It only shows on button templates that are not in use, in the above screen shot there is 5 sensor butttons, 2 in use, 3 not, the error only shows only show on ones not in use.

the browser console shows the following.

[Error] anonymous@
_evalTemplate@https://homeassistant.local:8123/hacsfiles/button-card/button-card.js:425:9393
@https://homeassistant.local:8123/hacsfiles/button-card/button-card.js:425:12392
forEach@[native code]
_buildStyleGeneric@https://homeassistant.local:8123/hacsfiles/button-card/button-card.js:425:12357
_getIconHtml@https://homeassistant.local:8123/hacsfiles/button-card/button-card.js:519:161
_gridHtml@https://homeassistant.local:8123/hacsfiles/button-card/button-card.js:499:544
_cardHtml@https://homeassistant.local:8123/hacsfiles/button-card/button-card.js:479:32
render@https://homeassistant.local:8123/hacsfiles/button-card/button-card.js:425:6933
update@https://homeassistant.local:8123/hacsfiles/button-card/button-card.js:1:19879
performUpdate@https://homeassistant.local:8123/hacsfiles/button-card/button-card.js:1:16767
@https://homeassistant.local:8123/hacsfiles/button-card/button-card.js:1:16426
	render (button-card.js:425:6967)
	update (button-card.js:1:19880)
	performUpdate (button-card.js:1:16768)
	(anonymous function) (button-card.js:1:16427)
[Error] Unhandled Promise Rejection: AbortError: The operation was aborted.
[Error] Failed to load resource: the server responded with a status of 404 (Not Found) (light-entity-card.js.map, line 0)

light-entity-card v6.1.0 is installed

Version of the card Version: 3.5.0

To Reproduce This is the configuration I used:

  styles:
    custom_fields:
      s1: &card_andyblac_room_sensor_1_icon_styling
        - position: "absolute"
        - left: "4%"
        - bottom: "44%"
        - width: "14%"
        - height: "14%"

  custom_fields:
    s1:
      card:
        type: "custom:button-card"
        template: >
          [[[
            let templates = [ 'card_andyblac_room_sensor_1_icon' ];
            if (variables?.sensor_1?.templates?.length) {
              templates.push(...variables.sensor_1.templates);
            }
            return templates;
          ]]]
        variables: "[[[ return variables?.sensor_1; ]]]"
        state:
          - operator: "template"
            value: "[[[ return !variables.sensor_1; ]]]"
            styles:
              card:
                - display: "none"
        entity: "[[[ return variables?.sensor_1?.entity_id; ]]]"

card_andyblac_room_sensor_1_icon:
  tap_action:
    action: "more-info"
  size: "15px"
  show_icon: true
  show_name: false
  styles:
    icon:
      - width: "90%"
      - height: "90%"
      - line-height: "0"
      - color: "[[[ return variables.ulm_card_room_sensor_color ? 'rgba(var(--color-'+variables.ulm_card_room_sensor_color+'),0.4)' : 'rgba(var(--color-theme),0.2)'; ]]]"
      # - color: "rgba(var(--color-theme),0.2)"
    card:
      - background: "none"
      - box-shadow: "none"
      - padding: "0px"
  state:
    - styles:
        icon:
          - color: "[[[ return variables.ulm_card_room_sensor_color ? 'rgba(var(--color-'+variables.ulm_card_room_sensor_color+'),1)' : 'rgba(var(--color-theme),0.7)'; ]]]"
          # - color: "rgba(var(--color-theme),0.7)"
      id:  "on"
      value: "[[[ return (entity?.state == '0' || entity?.state == 'off' || entity?.state == 'closed' || entity?.state == 'disarmed') ? '' : entity?.state; ]]]"

Screenshots

Expected behavior where the error are on scren it should just a empty space, when the sensor button is not in use, like the 2nd screenshot

Desktop (please complete the following information):

• Browser safari]
• Version 16.5.2