I'm making a dashboard for my team's bot using next.js and iron-session.

However, when I save the session and check it, req.session.user is undefined.

How can I fix this error???

Here is my code with the error:

page/auth.js:

Auth.getInitialProps = async ({ query }) => {
  //console.log(query.code)
  const result = await axios.get(`https://lunasite.prnm789.repl.co/api/sign/in?code=${query.code}`)
  const { access_token, refresh_token } = await result.data
  const newsession = await axios.post(`https://lunasite.prnm789.repl.co/api/session/new`, {
    access_token: access_token,
    refresh_token: refresh_token
  })
  ...
}

page/api/session/new.js:

import { withIronSessionApiRoute } from 'iron-session/next'
import { sessionOptions } from '../../../lib/config'

export default withIronSessionApiRoute(userRoute, sessionOptions)

async function userRoute(req, res) {
  if (req.method == "POST") {
    const { access_token, refresh_token } = req.body
    ...

    try {
      req.session.user = {
        isLoggedIn: true,
        access_token: access_token,
        refresh_token: refresh_token
      }
      await req.session.save()
      ...
    } catch(e) {
      ...
    }
  } else {
    ...
  }
}

lib/config.js:

export const sessionOptions = {
  cookieName: "luna_cookie",
  password: process.env.sessionCookiePass,
  cookieOptions: {
    secure: process.env.NODE_ENV === "production",
    maxAge: 604800 - 60
  },
}

page/api/session/get.js:

import { withIronSessionApiRoute } from "iron-session/next";
import { sessionOptions } from "../../../lib/config";

export default withIronSessionApiRoute(getRoute, sessionOptions);

function getRoute(req, res) {
  res.send(String(req.session.user))
}