Fatal error: Uncaught Error: Class "IXR_Server" not found in C:\SRV2\web\ntnone.info\wp-includes\IXR\class-IXR-introspectionserver.php:9 Stack trace: #0 {main} thrown in C:\SRV2\web\ntnone.info\wp-includes\IXR\class-IXR-introspectionserver.php on line 9