The URL applets can be configured with external URLs to redirect to a different website when the applet is opened.
The message "The page you are looking for could not be found." appears on the mobile screen when an external URL is opened.
The issue occurs when the URL configured in the applet doesn't start with http:// or https://
For example, www.google.com vs https://www.google.com
The URL configured in the Applet should start with http:// or https://