DataLayer.Rest or SQL: how to handle exceptions

{

    "Errors": [

        "Async error test"

    ],

    "StatusCode": 500

}

In this case, the dashboard panel where the DataLayer.Rest resides blew out and show the error in page:

 

What's the best practice here to handle exceptions so individual rest call won't affect the whole dashboard?

 

I know there is a element "IfDataError" but it is more for alternative Data Layer.

 

Regards,

 

Burt