zend-framework - SoapFault 例外: [SOAP-ENV:Client] エラーで /var/www/html/hutch-alco/application/ にパラメーターが見つかりません

Question

           $ns   = "auth";
           $wsdl = "(http://example.com/api?wsdl)";

        //Create our Auth Object to pass to the SOAP service with our values

            $rand = rand(11111111,99999999);
            $srt = 'ABCD';

            $auth->username = 'hopp_api_user';
            $auth->digestkey = sha1($srt);
            $auth->nonce =  $rand;
            $auth->request_time = date('Y-m-d H:i:s');

            $login    = new SoapVar($auth, SOAP_ENC_OBJECT);

            $authenticate = new SoapHeader($ns,'userauthentication',$login, false);

            $client = new SoapClient($wsdl,array('cache_wsdl' => 0,'trace'=>1));

            $client->__setSoapHeaders(array($authenticate));


            $aaass ->offer_id ='322';
            $aaass ->username ='user';

            $obje   = new SoapVar($aaass, SOAP_ENC_OBJECT);

            $aaa = $client->offerActivationByOfferID($obje);

/////////////////////////////////////////////// ////////////////////////////

SoapFault 例外: [SOAP-ENV:Client] Error cannot find parameter in /var/www/html/hutch-alco/application/controllers/TestController.php:65 スタック トレース: #0 /var/www/html/hutch-alco /application/controllers/TestController.php(65): SoapClient->__call('offerActivation...', Array) #1 /var/www/html/hutch-alco/application/controllers/TestController.php(65): SoapClient->offerActivationByOfferID(Object(SoapVar)) #2 /var/www/html/hutch-alco/library/Zend/Controller/Action.php(513): TestController->sujithAction() #3 /var/www/html /hutch-alco/library/Zend/Controller/Dispatcher/Standard.php(295): Zend_Controller_Action->dispatch('sujithAction') #4 /var/www/html/hutch-alco/library/Zend/Controller/Front. php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http),Object(Zend_Controller_Response_Http)) #5 /var/www/html/hutch-alco/application/bootstrap.php(51): Zend_Controller_Front->dispatch() #6 /var/www/html/hutch-alco/public/index. php(8): require('/var/www/html/h...') #7

このエラーが発生しました...

誰か助けてくれませんか........