Why is there a Cors error in React-admin?

Question

Node.js

I connected the admin panel to the front, in the dataProvider I drove a link to my server on the local, written in Node Js

import React from "react"
import { Admin, Resource } from "react-admin"
import restProvider from 'ra-data-simple-rest'
import PostList from "./PostList";

const AdminPage = () => {
  return (
    <Admin dataProvider={restProvider('http://192.168.88.83:3001')} >
      <Resource name='blogs' list={PostList} />
    </Admin>
  );
}

export default AdminPage

but in the console there is an error

admin#/blogs:1 Access to fetch at ' 192.168.88.83:3001/blogs?filter=%7B%7D&range=%5B0%... ' from origin ' localhost:3000 ' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
fetch.js:39 GET 192.168.88.83:3001/blogs?filter=%7B%7D&range=%5B0%... net::ERR_FAILED

A similar error came out earlier, with any requests on the project. Then I inserted the following code into index.js of the server

app.use(function (req, res, next) {
  res.setHeader('Access-Control-Allow-Origin', 'http://localhost:3000');
  res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');
  res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');
  res.setHeader('Access-Control-Allow-Credentials', true);
  next();
});

And everything helped, but for some reason the part with the admin panel continues to give the same error, although it is inside the same port