Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https, chrome-extension-resource.
You can see the error in the console of your browser. To view the console check How to Open/Activate Web Developer Tools on Chrome, Firefox and Safari Browsers
You are not opening the page through a server, like Apache or nginx, so when the browser tries to obtain the resource it thinks it is from a separate domain, which is not allowed.
Run a Server on your Machine
Open your page through a web server like Apache, nginx, node etc.
Use a Different Browser
I did not find this error when directly opening the page using Firefox and Safari.
- Krill Fuchs‘s answer to this Stackoverflow Question