} else {
            final String errorCode = UUID.randomUUID().toString();
            message = escapeJsonKeyValue("error_code:", errorCode);
            if (logger.isDebugEnabled()) {
                logger.debug("[{}] {}", errorCode, stacktraceString.get().replace("\n", "\\n"));
            } else {
                logger.warn("[{}] {}", errorCode, t.getMessage());
            }
        }