Fatal error: Uncaught Error: Class "IXR_Server" not found in D:\XAMPP\htdocs\UTeM\penerbit\wp-includes\IXR\class-IXR-introspectionserver.php:9
Stack trace:
#0 {main}
thrown in D:\XAMPP\htdocs\UTeM\penerbit\wp-includes\IXR\class-IXR-introspectionserver.php on line 9