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