Fatal error: Uncaught Error: Class 'ActionScheduler_SimpleSchedule' not found in /home/www/sieml/wp-content/plugins/the-events-calendar/vendor/woocommerce/action-scheduler/classes/schedules/ActionScheduler_CanceledSchedule.php:6 Stack trace: #0 {main} thrown in /home/www/sieml/wp-content/plugins/the-events-calendar/vendor/woocommerce/action-scheduler/classes/schedules/ActionScheduler_CanceledSchedule.php on line 6