Fastify & Socket.io CORS not accepted

I'm tring to set up fastify-socket.io, fastify-cors, but I'm still getting CORS errors.

I have fastify-cors and fastsity-socket.io registered

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost:5000/socket.io/?EIO=4&transport=polling&t=NoUUJ6g. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).

Here is the back-end code:

import fastify from "fastify";
import fastifyIO from "fastify-socket.io";
import fastifyCors from "fastify-cors";

const server = fastify();''
const PORT = 5000;

server.register(fastifyIO);
server.register(fastifyCors),
  {
    origin: "*",
    methods: "GET,POST,PUT,PATCH,DELETE",
  };

server.listen(PORT, () => {
  console.log(`Server running on port:${PORT}`);
});

server.get("/", (request, reply) => {
  reply.status(200).send({ ServerOnline: true });
});

server.ready().then(() => {
  server.io.on("connection", (socket) => {
    console.log("user connected" + socket.id);
    socket.on("message", (data) => {
      console.log(data);
    });
  });
});

Here is the front end code:

import "./App.css";
import { io } from "socket.io-client";

function App() {
  const sendData = () => {
    const socket = io("http://localhost:5000");
    socket.on("connection");
    const sendMessage = () => {
      socket.emit("message", "hey it worked!");
    };
    sendMessage();
  };

  return (
    <div className="app-container">
      <h1>Socket.IO</h1>
      <button onClick={sendData}>Send</button>
    </div>
  );
}

export default App;

I'm not sure why I'm getting these cors Errors I think it has something to do with fastify-socket.io