Notice (8): Undefined index: appId [APP/Controller/AjaxController.php, line 14]
Code Context

    function saveToken() {
         $app_id = trim($_POST['appId']);
AjaxController::saveToken() - APP/Controller/AjaxController.php, line 14
ReflectionMethod::invokeArgs() - [internal], line ??
Controller::invokeAction() - CORE/Cake/Controller/Controller.php, line 491
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 193
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - APP/webroot/index.php, line 108