Demo: KML example URL from documentation does not load

[paodb]

Describe the bug

The KML example URL used in the demo is not rendering. This URL was taken from the google documentation.

Expected behavior

The KML data should load and display the features defined in the file.

Minimal reproducible example

Go to https://addonsv25-staging.flowingcode.com/googlemaps/kml
or run the example as in the demo:

GoogleMap gmaps = new GoogleMap(apiKey, null, null);
gmaps.setMapType(MapType.ROADMAP);
gmaps.setSizeFull();

// KML example from official documentation
gmaps.setKml("https://developers.google.com/maps/documentation/javascript/examples/kml/westcampus.kml");

add(gmaps);

Add-on Version

2.4.1-SNAPSHOT

Vaadin Version

14, 24, 25

Additional information

• The same URL is referenced in the official documentation, but it is not rendered in the example there either.
• The URL does not work when tested using KML Viewer by providing it directly as a remote URL. However, if the file is downloaded and then uploaded manually into the viewer, it works correctly.

This suggests that the example KML URL may no longer be usable as a remote resource.