Card will not show when Casting

[ChristopherSathen]

I Have the AlertTicker Card installed and it works on my computer and on my phone (Android).
I can however not make the card work when I cast the Dashboard to a Chromecast.
The dashboard shows with all the cards showing with the exception of this card.
I shows as the card but only with the text "Configuration error".

Any idéas what I can do to make it work?

[djdevil]

Hi @ChristopherSathen 👋

I identified a likely cause: the card resolves LitElement at script load time by reading it from already-registered HA elements (ha-panel-lovelace, hui-view). On a normal browser these are always registered before custom card scripts run. On the Chromecast cast receiver the load order can be different — if neither element is registered yet, Object.getPrototypeOf(undefined) throws a TypeError, the entire script crashes silently, the custom element is never registered, and HA shows "Configuration error".

Fix in v1.2.5: added ha-card as a third fallback — it's a core HA element that should be reliably available even in the cast environment:

customElements.get("ha-panel-lovelace") ||
customElements.get("hui-view") ||
customElements.get("ha-card") // ← new fallback

Important: I don't have a Chromecast to test against, so I can't guarantee this is the exact cause.

If v1.2.5 still doesn't work when it's released, please share the browser console error from the cast device if possible — that would pinpoint the real issue.

[djdevil]

Hi,
The feature/fix you requested is now available in AlertTicker Card v1.2.5

Please update the card via HACS (or manually) and let me know if everything works as expected on your end. If you run into any issues or the behavior is not what you had in mind, feel free to reply here and I'll take a look.

Thanks for your patience and for helping improve the card!