Neos\Neos\Service\Controller\AbstractServiceController::processRequest PHP Метод

    public function processRequest(RequestInterface $request, ResponseInterface $response)
    {
        try {
            parent::processRequest($request, $response);
        } catch (StopActionException $exception) {
            throw $exception;
        } catch (\Exception $exception) {
            if ($this->request->getFormat() !== 'json' || !$response instanceof HttpResponse) {
                throw $exception;
            }
            $exceptionData = $this->convertException($exception);
            $response->setHeader('Content-Type', 'application/json');
            if ($exception instanceof FlowException) {
                $response->setStatus($exception->getStatusCode());
            } else {
                $response->setStatus(500);
            }
            $response->setContent(json_encode(array('error' => $exceptionData)));
            $this->systemLogger->logException($exception);
        }
    }