Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Definition\NodeInterface" not found in /home/pataplou/www/patrick/pataplouf/vendor/symfony/config/Tests/Fixtures/Configuration/CustomNode.php:8 Stack trace: #0 {main} thrown in /home/pataplou/www/patrick/pataplouf/vendor/symfony/config/Tests/Fixtures/Configuration/CustomNode.php on line 8