Fatal error: Uncaught Error: Class "Doctrine\ORM\EntityRepository" not found in /home/capacita/public_html/aula.certificateperu.com/src/Chamilo/UserBundle/Repository/GroupRepository.php:13 Stack trace: #0 {main} thrown in /home/capacita/public_html/aula.certificateperu.com/src/Chamilo/UserBundle/Repository/GroupRepository.php on line 13