How to set a cookie with Axios and ExpressJS

Question

I want to set a cookie after logging in. This is my log in method: (The res.cookie stuff doesn't work)

router.post("/login", (req, res) => {
  const userForToken = { username: req.body.username };
  const token = auth.generateAccessToken(userForToken);

  axios
    .post(userAPI + req.path, req.body)
    .then(() => {
      res.cookie("talloc_user_cookie_token", token, {
        maxAge: 60 * 60 * 24 * 7,
        httpOnly: true,
      });
      res.send({
        username: req.body.username,
        token: token,
      });
      console.log(
        `✅ Succesfully logged as <<${req.body.username}>> Status Code: ${res.statusCode}`
      );
    })
    .catch(() => {
      res.sendStatus(404);
      console.log("⛔ Error logging in. Status Code: ", res.statusCode);
    });
});

I have been reading other questions and forums and everybody says to use { withCredentials: true }, which in my case just gets the request to not work and just catch the error. I have also saw that I'd need to add the Access-Control-Allow-Origin header in the request, but It doesn't seem to work too.

For anyone wondering, I am trying to make a double token submit, where I have a JWT token set in localStorage, and a cookie that also has that token, so whenever my app's middleware authenticates the user, it has to check whether the token is correct and also if the token in localStorage is equals to the cookie's token, because cookie's values cannot be changed, whereas in localStorage it is in fact changable.