Please could you provide us more information about your “debug device” and the widget you are using? Screenshots or descriptions could help. Thank you.

I suspect the mobile features widget is trying to do something on the device that is being disallowed by some security policy on the device.

You could consider removing the widget entirely, though you’d lose some features in the process. Otherwise, you’ll need to find a way to expose the actual error from the Javascript/browser console on the device, so we can see what line of code is throwing the error.