    public static function incFront($vars, $param = '')
    {
        // print_r($param);
        // echo $vars;
        $file = GX_PATH.'/inc/lib/Control/Frontend/'.$vars.'.control.php';
        if (file_exists($file)) {
            # code...
            include $file;
        } else {
            // echo "error";
            self::error('404');
        }
    }
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.