Fatal error: Uncaught Error: Class "core\event\base" not found in /home/tecnovi4/public_html/transporte.tecnovirtual.edu.ec/mod/forum/classes/event/discussion_lock_updated.php:29 Stack trace: #0 {main} thrown in /home/tecnovi4/public_html/transporte.tecnovirtual.edu.ec/mod/forum/classes/event/discussion_lock_updated.php on line 29