PHP Fatal Error – yii\base\ErrorException

 
    public function get($data)
    {
        $result = \Yii::$app->cache->get($id = __CLASS__ . __METHOD__ . $data);
        if ($result === false) {
            $credentials = ['Username' => 'semyonchick', 'Password' => 'FYH7reo6zScmA1lOqHCu'];
            $header = new SOAPHeader('http://morpher.ru/', 'Credentials', $credentials);
            $url = 'http://morpher.ru/WebService.asmx?WSDL';
            try {
                $client = new SoapClient($url);
                $client->__setSoapHeaders($header);
                $get = (array)$client->__soapCall('GetXml', ['parameters' => ['s' => $data]]);
                $result = (array)$get['GetXmlResult'];
                if ($result) \Yii::$app->cache->set($id, $result, 60 * 60 * 24 * 30 * 12 * 10);
            } catch (\Exception $e) {
 
            }
        }
        return $result;