Ошибка XML RPC

Может ли кто-нибудь помочь мне с XML — RPC?
Я использую библиотеку xmlrpc http://gggeek.github.io/phpxmlrpc/ версия 4.0.0

Я не знаю, как вызвать getData и в результате.
Я постоянно возвращаю ошибку 17

Спасибо всем!!

Это мой «серверный» класс.

class xmlrpc_server (

public function run(){

$this->getMethods();
$this->server = new PhpXmlRpc\Server($this->methods);

}public function getMethods(){

$this->methods = array(

"getData" => array(
"function" => "getData",
"signature" => array( array( PhpXmlRpc\Value::$xmlrpcArray, PhpXmlRpc\Value::$xmlrpcInt   )),
"docstring" => "Auth server - getData (with AUTH ID).")

);

}function getData($m){

$mydata = array();
$mydata['user_id'] = $m->getParam(0); //sended user ID

return PhpXmlRpc\Response( $myexport, "array" );

}}

Класс клиента

class client(

public function send(){

$this->user_id      = 123456;

PhpXmlRpc\PhpXmlRpc::$xmlrpc_internalencoding = 'UTF-8';
$this->server_connect = new xmlrpc_client('/index.php', 'myserver.com', 80);

$params         = array(new xmlrpcval($this->user_id, 'int'));
$msg            = new xmlrpcmsg('getData', $params); //call 'getData'
$response       = $this->server_connect->send($msg);  //send and get response

print_r($response);  //print response

}

)

$client = new client;
$client->send();

И результаты из print_r ()

PhpXmlRpc\Response Object
(
[val] => 0
[valtyp] =>
[errno] => 17
[errstr] => Internal server error: no function matches method
[payload] =>
[hdrs] => Array
(
[date] => Sat, 11 Feb 2017 13:57:40 GMT
[server] => Apache/2.4.10 (Debian)
[vary] => Accept-Charset,Accept-Encoding
[content-encoding] => gzip
[content-length] => 201
[connection] => close
[content-type] => text/xml; charset=UTF-8
)

[_cookies] => Array
(
)

[content_type] => text/xml
[raw_data] => HTTP/1.1 200 OK
Date: Sat, 11 Feb 2017 13:57:40 GMT
Server: Apache/2.4.10 (Debian)
Vary: Accept-Charset,Accept-Encoding
Content-Encoding: gzip
Content-Length: 201
Connection: close
Content-Type: text/xml; charset=UTF-8