Notice (8): Undefined index: HTTP_REFERER [APP/Controller/UsersController.php, line 67]
Code Context
        //stefans 27.11.2017: false hinzugefügt, weil sonst das Setzen nicht funktioniert hat
        $this->Cookie->write('lang', $lang, false);
        $this->redirect($_SERVER['HTTP_REFERER']);
$lang = 'deu'
UsersController::set_lang() - APP/Controller/UsersController.php, line 67
ReflectionMethod::invokeArgs() - [internal], line ??
Controller::invokeAction() - ROOT/cakephp-2.3.1/lib/Cake/Controller/Controller.php, line 486
Dispatcher::_invoke() - ROOT/cakephp-2.3.1/lib/Cake/Routing/Dispatcher.php, line 187
Dispatcher::dispatch() - ROOT/cakephp-2.3.1/lib/Cake/Routing/Dispatcher.php, line 162
[main] - APP/webroot/index.php, line 97