Angular 8 приложение, возвращающее 304, не изменяется при попытке входа в систему, и страница входа сохраняется (не перенаправляется)

Question

Я вхожу в систему с настоящим тестовым пользователем, которого я вижу в БД, но ничего не происходит, и я остаюсь на странице входа. Я не вижу ошибок нигде, и я могу перейти к другим компонентам, введя их URL. Пожалуйста, дайте мне знать, если какой-либо дополнительный код поможет.

user.service. js

const config = require('config.json');
const jwt = require('jsonwebtoken');
const bcrypt = require('bcryptjs');
const db = require('../DB');
const User = db.User;

module.exports = {
    authenticate,
    getAll,
    getById,
    create,
    update,
    delete: _delete
};

async function authenticate({ username, password }) {
    const user = await User.findOne({ username });
    if (user && bcrypt.compareSync(password, user.hash)) {
        const { hash, ...userWithoutHash } = user.toObject();
        const token = jwt.sign({ sub: user.id }, config.secret);
        return {
            ...userWithoutHash,
            token
        };
    }
}

async function getAll() {
    return await User.find().select('-hash');
}

async function getById(id) {
    return await User.findById(id).select('-hash');
}

async function create(userParam) {
    // validate
    if (await User.findOne({ username: userParam.username })) {
        throw 'Username "' + userParam.username + '" is already taken';
    }

    const user = new User(userParam);

    // hash password
    if (userParam.password) {
        user.hash = bcrypt.hashSync(userParam.password, 10);
    }

    // save user
    await user.save();
}

async function update(id, userParam) {
    const user = await User.findById(id);

    // validate
    if (!user) throw 'User not found';
    if (user.username !== userParam.username && await User.findOne({ username: userParam.username })) {
        throw 'Username "' + userParam.username + '" is already taken';
    }

    // hash password if it was entered
    if (userParam.password) {
        userParam.hash = bcrypt.hashSync(userParam.password, 10);
    }

    // copy userParam properties to user
    Object.assign(user, userParam);

    await user.save();
}

async function _delete(id) {
    await User.findByIdAndRemove(id);
}

user.controller. js

const express = require('express');
const router = express.Router();
const userService = require('./user.service');

// routes
router.post('/authenticate', authenticate);
router.post('/register', register);
router.get('/', getAll);
router.get('/current', getCurrent);
router.get('/:id', getById);
router.put('/:id', update);
router.delete('/:id', _delete);

module.exports = router;

function authenticate(req, res, next) {
    userService.authenticate(req.body)
        .then(user => user ? res.json(user) : res.status(400).json({ message: 'Username or password is incorrect' }))
        .catch(err => next(err));
}

function register(req, res, next) {
    userService.create(req.body)
        .then(() => res.json({}))
        .catch(err => next(err));
}

function getAll(req, res, next) {
    userService.getAll()
        .then(users => res.json(users))
        .catch(err => next(err));
}

function getCurrent(req, res, next) {
    userService.getById(req.user.sub)
        .then(user => user ? res.json(user) : res.sendStatus(404))
        .catch(err => next(err));
}

function getById(req, res, next) {
    userService.getById(req.params.id)
        .then(user => user ? res.json(user) : res.sendStatus(404))
        .catch(err => next(err));
}

function update(req, res, next) {
    userService.update(req.params.id, req.body)
        .then(() => res.json({}))
        .catch(err => next(err));
}

function _delete(req, res, next) {
    userService.delete(req.params.id)
        .then(() => res.json({}))
        .catch(err => next(err));
}

user .route. js

const express = require('express');
const router = express.Router();
const userRoutes = express.Router();


const User = require('../models/User');

// routes
router.post('/authenticate', authenticate);
router.post('/register', register);
router.get('/', getAll);
router.get('/current', getCurrent);
router.get('/:id', getById);
router.put('/:id', update);
router.delete('/:id', _delete);

module.exports = router;

function authenticate(req, res, next) {
    userService.authenticate(req.body)
        .then(user => user ? res.json(user) : res.status(400).json({ message: 'Username or password is incorrect' }))
        .catch(err => next(err));
}

function register(req, res, next) {
    userService.create(req.body)
        .then(() => res.json({}))
        .catch(err => next(err));
}

function getAll(req, res, next) {
    userService.getAll()
        .then(users => res.json(users))
        .catch(err => next(err));
}

function getCurrent(req, res, next) {
    userService.getById(req.user.sub)
        .then(user => user ? res.json(user) : res.sendStatus(404))
        .catch(err => next(err));
}

function getById(req, res, next) {
    userService.getById(req.params.id)
        .then(user => user ? res.json(user) : res.sendStatus(404))
        .catch(err => next(err));
}

function update(req, res, next) {
    userService.update(req.params.id, req.body)
        .then(() => res.json({}))
        .catch(err => next(err));
}

function _delete(req, res, next) {
    userService.delete(req.params.id)
        .then(() => res.json({}))
        .catch(err => next(err));
}