public function execute()
 {
     $this->_response_method = \Wave\Exception::getResponseMethod();
     $this->error['code'] = $this->_data['exception']->getCode();
     $this->error['message'] = $this->_data['exception']->getMessage();
     if ($this->error['code'] == 0) {
         $this->_status = \Wave\Response::STATUS_EXCEPTION;
     } else {
         $this->_status = $this->error['code'];
     }
     return $this->respond();
 }