Warning: main(/var/www/html/blog/wp-admin/includes/admin.php): failed to open stream: No such file or directory in /var/www/html/blog/xmlrpc.php on line 42

Warning: main(): Failed opening '/var/www/html/blog/wp-admin/includes/admin.php' for inclusion (include_path='.:/php/includes:/usr/share/php') in /var/www/html/blog/xmlrpc.php on line 42
XML-RPC server accepts POST requests only.