Fatal error: Uncaught Error: Class 'DataUpdate' not found in /var/www/html/wiki_2023/extensions/Gadgets/includes/content/GadgetDefinitionDeletionUpdate.php:29 Stack trace: #0 {main} thrown in /var/www/html/wiki_2023/extensions/Gadgets/includes/content/GadgetDefinitionDeletionUpdate.php on line 29