public function execute(HTTPRequestCustom $request)
 {
     AppContext::get_session()->no_session_location();
     AppContext::get_response()->set_status_code(404);
     AdminError404Service::register_404();
     return parent::execute($request);
 }
 public function execute(HTTPRequestCustom $request)
 {
     AppContext::get_session()->csrf_get_protect();
     AdminError404Service::delete_404_error($request->get_getint('id'));
     AppContext::get_response()->redirect(AdminErrorsUrlBuilder::list_404_errors());
 }