ArcGIS Experience Builder: Only HTTPS is supported

Error Message

When attempting to embed content using website URLs from the attribute field in the Embed widget, the embedded content is not displayed and the following error message is returned.

Error: Only HTTPS is supported.

Cause

The attribute field is manually populated in the 'Embed by' text box of the Embed widget configuration pane. This causes the value to be treated as a single static string rather than a data-bound URL, bypassing data source mapping and runtime URL resolution. So the Embed widget cannot validate the resolved HTTPS URL and returns the error message.

Solution or Workaround

Select the data attribute from the Data option

1. Open the experience in Experience Builder.
2. Click the Embed widget to open the Embed pane.
3. In the Embed pane, on the Content tab, configure the parameters.
1. For Embed by, click URL.
2. Toggle Connect to data on.
3. Click Select data and in the Select data pane, select the preferred layer.
4. Click Data and in the Data attribute pane, select the field containing the URLs.
4. Click Save > Publish.

The experience below shows the Embed widget properly displaying the embedded image of the selected feature.

Note: 
The following alternatives can only be applied to display images referenced by image URLs stored in a field. URLs pointing to public websites or video content cannot be embedded and are treated as external links.

Use the Image or Feature Info widget

In Experience Builder, add the Image or Feature Info widget to the web experience and set the layer containing the image URLs as the data source.

The experience below shows the Feature Info widget properly displaying the embedded content of the selected feature.

Configure image URLs in pop-ups in Map Viewer

In ArcGIS Online Map Viewer, configure the pop-up by adding a new Image content and setting the field containing the image URLs as the URL parameter before publishing it to Experience Builder. Refer to ArcGIS Online: Add images for instructions. After which, toggle Enable pop-up on in the Map widget in the web experience.

The experience below shows the pop-up of the selected feature properly displayed.