Fatal error: Uncaught Error: Class "XMLDBAction" not found in C:\Apache24\htdocs\moodle\admin\tool\xmldb\actions\delete_index\delete_index.class.php:30 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\moodle\admin\tool\xmldb\actions\delete_index\delete_index.class.php on line 30