Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in /home/bucereo/my_project_name/vendor/sensio/framework-extra-bundle/DependencyInjection/SensioFrameworkExtraExtension.php:25 Stack trace: #0 {main} thrown in /home/bucereo/my_project_name/vendor/sensio/framework-extra-bundle/DependencyInjection/SensioFrameworkExtraExtension.php on line 25