Fatal error: Uncaught Error: Interface 'TEC\Common\Configuration\Configuration_Provider_Interface' not found in /home/www/sieml/wp-content/plugins/the-events-calendar/common/src/Common/Configuration/Configuration.php:19 Stack trace: #0 {main} thrown in /home/www/sieml/wp-content/plugins/the-events-calendar/common/src/Common/Configuration/Configuration.php on line 19