Application error: called handler method MissingActionException: Action GroupsController::index.html() could not be found. in /var/www/html/lib/Cake/Controller/Controller.php:505
Stack trace:
#0 /var/www/html/lib/Cake/Routing/Dispatcher.php(193): Controller->invokeAction(Object(CakeRequest))
#1 /var/www/html/lib/Cake/Routing/Dispatcher.php(167): Dispatcher->_invoke(Object(GroupsController), Object(CakeRequest))
#2 /var/www/html/app/webroot/index.php(168): Dispatcher->dispatch(Object(CakeRequest), Object(CakeResponse))
#3 {main}