Fatal error: Uncaught Error: Class "core\task\scheduled_task" not found in C:\Apache24\htdocs\moodle\admin\tool\langimport\classes\task\update_langpacks_task.php:33 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\moodle\admin\tool\langimport\classes\task\update_langpacks_task.php on line 33