로그인 함수가 듣지 않습니다

router.use(session({
  secret: 'process.env.DB_SECRET',
  resave : false,    
  saveUninitialized : false 
})) 
router.use(passport.session())
router.use(passport.initialize())

passport.use(
  new LocalStrategy(
    {
      usernameField: "id",
      passwordField: "pw",
      session: true,
      passReqToCallback: false,
    },
    function (입력한아이디, 입력한비번, done) {
      console.log("입력한 아이디 :" + 입력한아이디 + '\n'+"입력한 비번 :" + 입력한비번);

     database.loginfindOne({id:입력한아이디}).then((result)=>{
      if (!result)
        return done(null, false, { message: "존재하지않는 아이디입니다." });
      if (입력한비번 == result.pw) {
        return done(null, result);
      } else {
        return done(null, false, { message: "다시 입력바랍니다." });
      }      
     }).catch((error)=>{
      return done(error);
     })
    }
  )
);

passport.serializeUser(function (user, done) {
  done(null, user.id);
});

passport.deserializeUser(function (아이디, done) {
  database.loginfindOne({id:아이디}).then((result)=>{
    done(null,{});
  });
  
});

function 로그인했니(req, res, next) {
  console.log(req.body.id + "req.body");
  console.log(req.user + " 로그인했니 req.user");

  
  if (req.user) {   // 브라우저에 세션이 있으면 넘어가
    next();
  } else {
    console.log("실패!");
    res.send('<script>alert("로그인을 해주세요."); window.location.replace("/login");</script>');
  }
}

router.post(
  "/login",
  passport.authenticate("local", {
    failureRedirect: "/login" }),(req,res)=>{
      res.redirect('/');
    });


오류 메시지 
undefined 로그인했니 req.user
TypeError: Cannot read properties of undefined (reading 'id')
    at C:\Users\com_01\Desktop\butterfly\poca\routes\loginRoute.js:98:45
    at Layer.handle [as handle_request] (C:\Users\com_01\Desktop\butterfly\poca\node_modules\express\lib\router\layer.js:95:5)
    at next (C:\Users\com_01\Desktop\butterfly\poca\node_modules\express\lib\router\route.js:144:13)
    at 로그인했니 (C:\Users\com_01\Desktop\butterfly\poca\routes\loginRoute.js:73:5)
    at Layer.handle [as handle_request] (C:\Users\com_01\Desktop\butterfly\poca\node_modules\express\lib\router\layer.js:95:5)
    at next (C:\Users\com_01\Desktop\butterfly\poca\node_modules\express\lib\router\route.js:144:13)
    at Route.dispatch (C:\Users\com_01\Desktop\butterfly\poca\node_modules\express\lib\router\route.js:114:3)
    at Layer.handle [as handle_request] (C:\Users\com_01\Desktop\butterfly\poca\node_modules\express\lib\router\layer.js:95:5)
    at C:\Users\com_01\Desktop\butterfly\poca\node_modules\express\lib\router\index.js:284:15
    at Function.process_params (C:\Users\com_01\Desktop\butterfly\poca\node_modules\express\lib\router\index.js:346:12)

왜 로그인 할 때 req.user가 없다고 나올까요?