Cannot add new holidays

[dcmeglio]

Trying to add a new holiday and just getting:

No holidays found. Ensure that you have configured Calendarific with a valid country and api key. [Please read the instructions](https://github.com/pinkywafer/Calendarific).

Confirmed the API key is correct, country configured, everything is good. Existing holidays are working (e.g. Easter now says 4/20/25) so the API key must be good.

Nothing useful in the logs even with debug mode enabled.

I tested calling the API with curl and it works as expected.