Fatal error: Uncaught Error: Interface "Symfony\Component\Form\FormConfigBuilderInterface" not found in /home/pataplou/www/patrick/pataplouf/vendor/symfony/form/FormConfigBuilder.php:27 Stack trace: #0 {main} thrown in /home/pataplou/www/patrick/pataplouf/vendor/symfony/form/FormConfigBuilder.php on line 27