NodeJS express redirect page after login - node.js

Question

i have a weird problem and i could't solve it. First of all here is my code;
exports.postLogin = async (req, res, next) => {
try {
const inputs = await loginSchema.validateAsync(req.body);
pool.connect(async (error, client, release) => {
if (error) {
return console.error("ERROR", error.stack);
}
const isExisting = await client.query(
`SELECT * FROM users WHERE email = '${inputs.email}'`
);
if (isExisting.rowCount == 0) {
release();
return next(Boom.notFound("User not found!"));
} else {
const isCorrectPwd = await bcrypt.compare(
inputs.password,
isExisting.rows[0].password
);
if (!isCorrectPwd) {
return next(Boom.unauthorized("Wrong password!"));
}
const accessToken = await signAccessToken(isExisting.rows[0].userid);
const refreshToken = await signRefreshToken(isExisting.rows[0].userid);
if (accessToken.length !== 0) {
res.cookie("jwt", refreshToken, {
httpOnly: true,
maxAge: 31556952000
});
// res.header("Authorization", "Bearer " + accessToken);
res.redirect(303, '/');
}
}
});
} catch (error) {
if (error.isJoi === true)
return next(createError.BadRequest("Invalid username/password"));
next(error);
}
};
This is my login controller for post request. It works perfectly when i finalise it with res.json(accessToken,refreshToken). But i want to redirect user to homepage when login process succesfull. With this code nodejs tries to do POST request to "/" my homepage. I have no idea why my redirect request appear to be a post request. What's wrong with my code? Thanks in advance...
here is homepage controller;
exports.getHomePage = async (req, res, next) => {
res.render("home", { path: "/" });
};
and here is it's route;
const express = require("express");
const protectController = require("../controller/protect");
const { verifyAccessToken } = require("../helpers/jwt_helper");
const router = express.Router();
router.get("/secretpage", verifyAccessToken, protectController.getPage);
router.get("/", protectController.getHomePage);
module.exports = router;
and here is my terminal logs;
Express server listening on port 3000
Client connected to redis
Client connected to redis and ready to use
POST /auth/login 303 761.269 ms - 36
POST / 404 7.056 ms - 69