Fatal error: Uncaught Error: Class 'core\task\scheduled_task' not found in /home/aefn/public_html/moodle/lib/classes/task/cache_cron_task.php:29 Stack trace: #0 {main} thrown in /home/aefn/public_html/moodle/lib/classes/task/cache_cron_task.php on line 29