require_once（C：\ wamp \ www \ ecommerce \ pages \ ecommerce.php）[function.require-once]：无法打开流：

Warning: require_once(C:\wamp\www\ecommerce\pages\ecommerce.php) [function.require-once]: failed to open stream: No such file or directory in C:\wamp\www\ecommerce\classes\Core.php on line 59

I'm following the project videos of one of the Web Ecommerce project using PHP,MYSQL.

Here is my run() method Throwing error:

public function run() {

        ob_start();


        switch ($this->objUrl->module) {
            case 'panel':
                set_include_path(implode(PATH_SEPARATOR, array(
                    realpath(ROOT_PATH.DS.'admin'.DS.TEMPLATE_DIR),
                    realpath(ROOT_PATH.DS.'admin'.DS.PAGES_DIR),
                    get_include_path()
                    )));
                require_once(ROOT_PATH.DS.'admin'.DS.PAGES_DIR.DS.
                    $this->objUrl->cpage.'.php');
                break;

            default:
                set_include_path(implode(PATH_SEPARATOR, array(
                    realpath(ROOT_PATH.DS.TEMPLATE_DIR),
                    realpath(ROOT_PATH.DS.PAGES_DIR),
                    get_include_path()
                    )));
                require_once(ROOT_PATH.DS.PAGES_DIR.DS.
                    $this->objUrl->cpage.'.php');

        }



        ob_get_flush();
    }