Fatal error: Uncaught Error: Interface "IWPML_AJAX_Action" not found in /home/oxygenco/prod/wordpress/wp-content/plugins/sitepress-multilingual-cms/classes/ajax/Factory.php:17 Stack trace: #0 {main} thrown in /home/oxygenco/prod/wordpress/wp-content/plugins/sitepress-multilingual-cms/classes/ajax/Factory.php on line 17