Fatal error: Uncaught Symfony\Component\Debug\Exception\ClassNotFoundException: Attempted to load class "ExpressionFunction" from namespace "Symfony\Component\ExpressionLanguage". Did you forget a "use" statement for "Symfony\Component\ExpressionLanguage\ExpressionFunction"? in /var/www/webapp/vendor/symfony/symfony/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php:149 Stack trace: #0 /var/www/webapp/vendor/sensio/framework-extra-bundle/Security/ExpressionLanguage.php(25): Symfony\Component\ExpressionLanguage\ExpressionLanguage->registerFunctions() #1 /var/www/webapp/vendor/symfony/symfony/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php(49): Sensio\Bundle\FrameworkExtraBundle\Security\ExpressionLanguage->registerFunctions() #2 /var/www/webapp/vendor/symfony/symfony/src/Symfony/Component/Security/Core/Authorization/ExpressionLanguage.php(33): Symfony\Component\ExpressionLanguage\ExpressionLanguage->__construct(NULL, Array) #3 /var/www/webapp/var/cache/prod/appProdProjectContainer.php(3103): Sy in /var/www/webapp/src/AppBundle/Resources/views/base.html.twig on line 5