Symfony\Component\Debug\Exception\FlattenException::toArray PHP Method

    public function toArray()
    {
        $exceptions = array();
        foreach (array_merge(array($this), $this->getAllPrevious()) as $exception) {
            $exceptions[] = array(
                'message' => $exception->getMessage(),
                'class' => $exception->getClass(),
                'trace' => $exception->getTrace(),
            );
        }

        return $exceptions;
    }

 /**
  * Converts an Exception to a Response.
  *
  * A "showException" request parameter can be used to force display of an error page (when set to false) or
  * the exception page (when true). If it is not present, the "debug" value passed into the constructor will
  * be used.
  *
  * @param Request              $request   The request
  * @param FlattenException     $exception A FlattenException instance
  * @param DebugLoggerInterface $logger    A DebugLoggerInterface instance
  *
  * @return Response
  *
  * @throws \InvalidArgumentException When the exception template does not exist
  */
 public function showAction(Request $request, FlattenException $exception, DebugLoggerInterface $logger = null)
 {
     $showException = $request->attributes->get('showException', $this->debug);
     // As opposed to an additional parameter, this maintains BC
     $code = $exception->getStatusCode();
     $response = ['error' => $code, 'message' => isset(Response::$statusTexts[$code]) ? Response::$statusTexts[$code] : ''];
     if ($showException) {
         $response['exception'] = $exception->toArray();
     }
     return new JsonResponse($response, $code);
 }