Fatal error: Uncaught Error: Class "Sonata\ClassificationBundle\Entity\BaseCollection" not found in /home/capacita/public_html/aula.certificateperu.com/src/Chamilo/ClassificationBundle/Entity/Collection.php:24 Stack trace: #0 {main} thrown in /home/capacita/public_html/aula.certificateperu.com/src/Chamilo/ClassificationBundle/Entity/Collection.php on line 24