Fatal error: Uncaught Error: Class 'TEC\Events\Custom_Tables\V1\Models\Validators\Duration' not found in /home/www/sieml/wp-content/plugins/the-events-calendar/src/Events/Custom_Tables/V1/Models/Validators/Occurrence_Duration.php:23 Stack trace: #0 {main} thrown in /home/www/sieml/wp-content/plugins/the-events-calendar/src/Events/Custom_Tables/V1/Models/Validators/Occurrence_Duration.php on line 23