Fatal error: Uncaught Error: Class "IXR_Client" not found in C:\xampp\htdocs\alumni-rmutr\wp-includes\class-wp-http-ixr-client.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\alumni-rmutr\wp-includes\class-wp-http-ixr-client.php on line 9