javascript - ChartJs doesn't work on a local downloaded page of Circular Gauge chart example -

I downloaded the following page:

But when I open the local HTML, an empty page shows is . My idea was changing the example according to my needs Does anyone know how the local page works?

This demo can be accessed in the zip package, which you can download from the file you open

DevExpressChartJS-13.2.7.zip \ Demos \ VizGallery \ demos \ circular gauge \ pallet for the original element \ Ranges.html

and modify it.

You can also mofify code directly on code that you have linked using the online code editor (but you will not be able to save results)