Notice (8): Trying to access array offset on value of type null [APP/Controller/AppController.php, line 79]
Code Context
    function _setPreviewing()
    {
        if ($this->authUser['id']) {
AppController::_setPreviewing() - APP/Controller/AppController.php, line 79
AppController::beforeFilter() - APP/Controller/AppController.php, line 53
ContentPagesController::beforeFilter() - APP/Controller/ContentPagesController.php, line 23
CakeEventManager::dispatch() - CORE/Cake/Event/CakeEventManager.php, line 244
Controller::startupProcess() - CORE/Cake/Controller/Controller.php, line 682
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 189
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - APP/webroot/index.php, line 97