Soap configuration Drupal 8

I was searching a lot of videos, and content about SOAP service conexion with php and drupal, and finally i think i understood how it work, i had create my test_server.php and test_client.php and everything was fine using soap, but, now i'm try to connect using my own custom module with a real server and i just have a bad response:

"array(3) { [0]=> string(38) "LoginResponse Login(Login $parameters)" [1]=> string(41) "LogoutResponse Logout(Logout $parameters)" [2]=> string(65) "IsValidSessionResponse IsValidSession(IsValidSession $parameters)" } NULL"

Can somebody tell me what i'm doing bad here? Drupal 8:

Custom_module/src/myservice.php

****** Here is my code inside my service ******

ini_set ("display_errors", true);


namespace Drupal\areadum;
use \SoapClient;

class areadumConectorService
{

  public function identificarUsuario()
  {

    // Create the object
    echo "********** INICIO DEL LOGIN **********<br>";
    $soapLoginOptions = array(
      "trace" => true,
      'exceptions' => true,
    );


    $soapLogin = new soapClient("http://myserver.svc?WSDL", $soapLoginOptions);
    echo "********** VOLCADO DE FUNCIONES DE AUTENTICACION **********<br>";
    echo "<pre>"; var_dump ($soapLogin->__getFunctions()); echo "</pre>";
    echo "********** VOLCADO DE TIPOS DE AUTENTICACION **********<br>";
    echo "<pre>"; var_dump ($soapLogin->__getTypes()); echo "</pre>";

    // preparamos los parámetros del login
    $soapLoginParameters = array(
      'userName'	=> 'dum1@dev.com',
      'password'	=> sha1('develop') // OJO!!!!!! el password tiene que encriptarse son sha1
    );

    echo "********** LLAMADA AL LOGIN ********** <br>";
    // llamamos a la funcion Login
    $error = 0;
    try {
      $soapLoginResponse = $soapLogin->__soapCall("Login", array("parameters" => $soapLoginParameters));
      $soapToken = $soapLoginResponse->LoginResult->SessionToken;
      echo "Token: " . $soapToken ."<br>";
    } catch (SoapFault $fault) {
      $error = 1;
      echo "ERROR: ".$fault->faultcode."-".$fault->faultstring.".";
    }
    echo "********** FINAL DEL LOGIN **********<br><br><br>";


    // y ahora vamos a otro webservice con el token

    echo "********** INICIO DE LA RECUPERACIÓN DE DATOS DE USUARIO **********<br>";
    $soapUserDataOptions = array(
      "trace" => true,
      'exceptions' => true,
    );

    $soapUserData = new SoapClient("http://myserver.svc?WSDL", $soapUserDataOptions);
    echo "********** VOLCADO DE FUNCIONES DE AUTENTICACION **********<br>";
    echo "<pre>"; var_dump ($soapUserData->__getFunctions()); echo "</pre>";
    echo "********** VOLCADO DE TIPOS DE AUTENTICACION **********<br>";
    echo "<pre>"; var_dump ($soapUserData->__getTypes()); echo "</pre>";

    $headerbody = array('SessionToken' => $soapToken );
    $header = new SoapHeader('ns','SessionToken',$soapToken,false);
    $soapUserData->__setSoapHeaders($header);

    try {
      $soapUserDataResponse = $soapUserData->GetUserAccountAdmin();
      var_dump ($soapUserDataResponse);
    } catch (SoapFault $fault) {
      $error = 1;
      echo "ERROR: ".$fault->faultcode."-".$fault->faultstring.".";
    }

    echo "********** FINAL DE LA RECUPERACIÓN DE DATOS DE USUARIO **********<br><br><br>";

    $output = array(
    '#markup'=>('Message test'),
    );
    return $output;
  }
}