After writing code in express framework I am getting error for route level

Full error

D:servernode_modulesexpresslibrouterroute.js:216
        throw new Error(msg);
        ^

Error: Route.post() requires a callback function but got a [object Undefined]
    at Route.<computed> [as post] (D:servernode_modulesexpresslibrouterroute.js:216:15)
    at proto.<computed> [as post] (D:servernode_modulesexpresslibrouterindex.js:521:19)
    at Object.<anonymous> (D:serverroutesauth.js:8:8)
    at Module._compile (node:internal/modules/cjs/loader:1358:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1416:10)
    at Module.load (node:internal/modules/cjs/loader:1208:32)
    at Module._load (node:internal/modules/cjs/loader:1024:12)
    at Module.require (node:internal/modules/cjs/loader:1233:19)
    at require (node:internal/modules/helpers:179:18)
    at Object.<anonymous> (D:serverroutesindex.js:5:20)

Node.js v20.14.0
[nodemon] app crashed - waiting for file changes before starting...

auth.js:8:8 code

const router = require('express').Router();
const { regController, logController } = require('../controller/auth');

router.post('/reg', regController);
router.post('/log', logController);

module.exports = router;

index.js:5:20

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

const authRoutes = require('./auth');

const usersRoutes = require('./users')
const authenticate = require('../middleware/authenticate');

router.use('/auth', authRoutes);
router.use('/users', authenticate, usersRoutes);

module.exports = router;

controller/auth.js

const { regService, logService } = require('../service/auth');

const registerController = async (req, res, next) => {
    //console.log(req.body);
    const { name, email} = req.body;

    if (!name || !email {     
        return res.status(400).json({ message: "Invalid Data" })
    }

    try {
        const user = await regService({ name, email })
        return res.status(200).json({ message: "User created successfully", user })
    } catch (error) {
        next(error);
    }
};

const loginController = async (req, res, next) => {
    const { email, password } = req.body
    //console.log(req.body);
    try {
        const token = await logService({ email, password });
        return res.status(200).json({ message: "Login Successfull", token });
    } catch (e) {
        next(e);
    }
};

module.export = { regController, logController };

I wrote auth.js & index.js file so many times, and check the controller code, also upgrade the node version, unfortunately error is the same for all time