Our automatically-generated error handling wrappers help you properly detect and display coding and execution errors from both client and server-side charts. All these charts are supposed to gracefully catch a first exception and show a friendly error message. We generate the error internally, depending on the application and the chart type. When the external Errors switch ON, all such exceptions are trapped and displayed to the end-user in a friendly manner. Turn the switch OFF, and the error will likely not be displayed. The "Loading" icon continues to appear on screen. The actual error may have been trapped by your browser, but you have to open the developer tools or your other browser plugin.