Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Definition\ConfigurationInterface" not found in /home/capacita/public_html/aula.certificateperu.com/src/Chamilo/CourseBundle/DependencyInjection/Configuration.php:16 Stack trace: #0 {main} thrown in /home/capacita/public_html/aula.certificateperu.com/src/Chamilo/CourseBundle/DependencyInjection/Configuration.php on line 16