Use server-side environment (eg localhost)

For a better experience with the template it’s recommended to be developed/tested in a server side environment:

a) Either hosted online on a server

b) Or better, use a virtual server environment on your personal computer, for example: XAMPP, WAMP, MAMP etc. They contain Apache server, Mysql and PHP and already configured.
Here are some tutorials on how to install them:

Place the template in “www” folder of WAMP and then in browser “localhost/template”