500 Internal Server Error

Call to undefined method ItemController::notFound() (0)

#0 [internal function]: {closure}()
#1 /var/www/html/CM/Core/Dispatcher.php(136): call_user_func_array()
#2 /var/www/html/CM/Core/Dispatcher.php(127): CM\Core\Dispatcher->callFunction()
#3 /var/www/html/CM/Core/Dispatcher.php(52): CM\Core\Dispatcher->execute()
#4 /var/www/html/CM/Engine.php(119): CM\Core\Dispatcher->run()
#5 /var/www/html/CM/CM.php(66): CM\Engine->__call()
#6 /var/www/html/multamesta/controllers/PageController.php(64): CM::__callStatic()
#7 [internal function]: PageController->viewItemForPermalink()
#8 /var/www/html/CM/Core/Dispatcher.php(146): call_user_func_array()
#9 /var/www/html/CM/Core/Dispatcher.php(126): CM\Core\Dispatcher->invokeMethod()
#10 /var/www/html/CM/Net/Router.php(115): CM\Core\Dispatcher->execute()
#11 /var/www/html/CM/Engine.php(315): CM\Net\Router->route()
#12 [internal function]: CM\Engine->_start()
#13 /var/www/html/CM/Core/Dispatcher.php(143): call_user_func_array()
#14 /var/www/html/CM/Core/Dispatcher.php(126): CM\Core\Dispatcher->invokeMethod()
#15 /var/www/html/CM/Core/Dispatcher.php(52): CM\Core\Dispatcher->execute()
#16 /var/www/html/CM/Engine.php(119): CM\Core\Dispatcher->run()
#17 /var/www/html/CM/CM.php(66): CM\Engine->__call()
#18 /var/www/html/multamesta/index.php(5): CM::__callStatic()
#19 {main}