Bolt\EventListener\ExceptionListener::onKernelException PHP Method

    public function onKernelException(GetResponseForExceptionEvent $event)
    {
        if ($this->isProfilerRequest($event->getRequest())) {
            return;
        }
        $exception = $event->getException();
        $message = $exception->getMessage();
        $statusCode = Response::HTTP_INTERNAL_SERVER_ERROR;
        if ($exception instanceof HttpExceptionInterface) {
            $statusCode = $exception->getStatusCode();
        }
        // Log the error message
        $level = LogLevel::CRITICAL;
        if ($exception instanceof HttpExceptionInterface && $exception->getStatusCode() < 500) {
            $level = LogLevel::WARNING;
        }
        $this->logger->log($level, $message, ['event' => 'exception', 'exception' => $exception]);
        // Get and send the response
        if ($this->isJsonRequest($event->getRequest())) {
            $response = new JsonResponse(['success' => false, 'errorType' => get_class($exception), 'code' => $statusCode, 'message' => $message]);
        } elseif ($this->config->get('general/debug_error_use_symfony')) {
            return null;
        } else {
            $response = $this->exceptionController->kernelException($event);
        }
        $response->setStatusCode($statusCode);
        $event->setResponse($response);
    }