Fatal error: Uncaught Error: Class 'Symfony\Component\Templating\Helper\Helper' not found in /home/lafaamicps/www/symfony/vendor/knplabs/knp-menu-bundle/Knp/Bundle/MenuBundle/Templating/Helper/MenuHelper.php:8 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/knplabs/knp-menu-bundle/Knp/Bundle/MenuBundle/Templating/Helper/MenuHelper.php on line 8