isAuthenticated passport not working (always FALSE) - node.js

Question

This is a project with stack MEAN.
I use passport for authentication, but it doesn't work well.
After logging in, reloading the page, access is immediately requested, not recognizing that the user is authenticated.
This is my code (service, model js, component angular, app.js)
// app.component.ts
constructor(private _modalService: NgbModal, private _user:UserService, private _router:Router) {
this._user.userLogged().subscribe(
data => console.log(data),
error => this._router.navigate(['/login'])
)
}
// user.service.ts
login(body:any) {
return this._http.post('http://127.0.0.1:3000/users/login', body, {
observe: 'body',
withCredentials: true,
headers: new HttpHeaders().append('Content-type', 'application/json')
});
}
userLogged() {
return this._http.get('http://127.0.0.1:3000/users/user-logged', {
observe: 'body',
withCredentials: true,
headers: new HttpHeaders().append('Content-type', 'application/json')
});
}
// users.js
router.post('/login', function (req, res, next) {
passport.authenticate('local',function (err, user, info) {
if (err) return res.status(501).json(err);
if (!user) return res.status(501).json(info);
req.logIn(user, function (err) {
if (err) return res.status(501).json(err);
return res.status(200).json({message: "login ok"});
});
})(req, res, next);
});
router.get('/user-logged', isValidUser, function (req,res,next) {
return res.status(200).json(req.user);
});
function isValidUser(req,res,next) {
if (req.isAuthenticated()) return next();
return res.status(401).json({message: 'Non autorizzato'});
}
// app.js
var passport = require('passport');
var session = require('express-session');
const MongoStore = require('connect-mongo');
app.use(session({
name: 'myname.sid',
resave: false,
saveUninitialized: false,
secret: 'secret',
cookie: {
maxAge: 36000000,
httpOnly: false,
secure: false,
},
store: MongoStore.create({mongoUrl: 'mongodb://localhost/iHospital'})
}));
require('./passport-config');
app.use(passport.initialize());
app.use(passport.session());