@ebykdrms knki şunu çözersek super olur

backend .env

CLIENT_HOST="https://socializee-app.vercel.app"

middleware

import { NextResponse } from "next/server";

export const middleware = async (req) => {
    const { nextUrl, cookies } = req;
    const token = cookies.get("token");
    const pathname = nextUrl.pathname;
    const paths = ["/auth/login", "/auth/register"];

    if (!paths.includes(pathname) && !token?.value) {
        return NextResponse.redirect(new URL("/auth/login", req.url));
    }

    if (paths.includes(pathname) && token?.value) {
        return NextResponse.redirect(new URL("/dashboard", req.url));
    }

    return NextResponse.next();
};

export const config = {
    matcher: [
        "/",
        "/dashboard",
        "/dashboard/:path*",
        "/auth/register",
        "/auth/login",
    ],
};

login sayfası

 const handleSubmit = async (e) => {
        e.preventDefault();

        try {
            setLoading(true);
            const res = await FetchLogin(data);
            if (res.status === 200) {
                toast.success(res.data.message);
                router.push("/dashboard");
            }
        } catch (error) {
            toast.error(error.response.data.message ?? error.message);
        } finally {
            setLoading(false);
        }
    };

login sayfası

 const handleSubmit = async (e) => {
        e.preventDefault();

        try {
            setLoading(true);
            const res = await FetchLogin(data);
            if (res.status === 200) {
                toast.success(res.data.message);
                router.push("/dashboard");
            }
        } catch (error) {
            toast.error(error.response.data.message ?? error.message);
        } finally {
            setLoading(false);
        }
    };

kodlarım bu sekilde @ebykdrms ve ben kayıt olmayı denedim oldu bir hata vermedi

const express = require("express");
const https = require("http");
require("dotenv").config();
const dbConnect = require("./libs/dbConnect.js");
const cors = require("cors");
const bodyParser = require("body-parser");
const cookieParser = require("cookie-parser");
const root = require("./routers/root.js");
const errorHandler = require("./middleware/error.js");

dbConnect();

const app = express();
const server = https.createServer(app);

const corsOptions = {
    origin: process.env.CLIENT_HOST,
    credentials: true,
};

app.use(cors(corsOptions));
app.use(bodyParser.json({ extended: true }));
app.use(bodyParser.urlencoded({ extended: true }));
app.use(cookieParser());

app.use("/api", root);
app.use(errorHandler);

const port = process.env.PORT || 3000;

server.listen(port, () => {
    console.log(`listening to port ${port}`);
});

cpanelinde .htaccess diye bir dosya olucak ona şu kodu yapıştır

<IfModule mod_rewrite.c>
  RewriteEngine On
  RewriteBase /
  RewriteRule ^index\.html$ - [L]
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_FILENAME} !-l
  RewriteRule . /index.html [L]
</IfModule>

bir örnekle anlatabilir misin