Fatal error: Uncaught Error: Class 'Symfony\Component\DependencyInjection\Extension\Extension' not found in /home/logercm/dev.loger.cm/vendor/jms/serializer-bundle/DependencyInjection/JMSSerializerExtension.php:31 Stack trace: #0 {main} thrown in /home/logercm/dev.loger.cm/vendor/jms/serializer-bundle/DependencyInjection/JMSSerializerExtension.php on line 31