Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in /home/synap/fr/synap/dev/www/7/vendor/sensio/framework-extra-bundle/Sensio/Bundle/FrameworkExtraBundle/DependencyInjection/SensioFrameworkExtraExtension.php:24 Stack trace: #0 {main} thrown in /home/synap/fr/synap/dev/www/7/vendor/sensio/framework-extra-bundle/Sensio/Bundle/FrameworkExtraBundle/DependencyInjection/SensioFrameworkExtraExtension.php on line 24