SubFusion FrameworkController 'internet_business' not found

Please check that a controller file named internet_business exists in /apps/realbusiness.co.uk/current/controllers/internet_business.class and ensure that it contains at least the following:

<?

class Internet_business extends Controller {

    function 
Internet_business() {
        
parent::Controller();
    }

    function 
index() {
        
// Your code here...
    
}

}

?>