@RequestMapping(value = "/room-event/{id}", method = RequestMethod.GET)
    public ModelAndView speakerPage(
            final HttpServletRequest request,
            final HttpServletResponse response,
            @PathVariable(value = "id") final String idStr
    ) throws IOException {
        ModelAndView modelAndView = new ModelAndView("room-event-layout");
        if (idStr == null) {
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            modelAndView = null;
        } else {
            modelAndView.addObject(idStr);
        }

        return modelAndView;
    }