Notice (8): Undefined index: HTTP_REFERER [APP/Controller/AppController.php, line 46]
Code
         $this->Session->write('Config.language','spa');
        Configure::write('Config.language', 'spa');
        $this->redirect($_SERVER['HTTP_REFERER']);
AppController::espanol() - APP/Controller/AppController.php, line 46
ReflectionMethod::invokeArgs() - [internal], line ??
Controller::invokeAction() - CORE/Cake/Controller/Controller.php, line 473
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 107
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 89
[main] - APP/webroot/index.php, line 96