Socket.IO giving constant polling 404 error (Socket.IO new user) - node.js

Question

Im using a Express server and trying to implement Socket.io for the first time, and I keep getting this whenever I open it:
GET /socket.io/?EIO=4&transport=polling&t=OKgNATB 404 0.526 ms - 149
GET /socket.io/?EIO=4&transport=polling&t=OKgNBww 404 0.332 ms - 149
GET /socket.io/?EIO=4&transport=polling&t=OKgNDOV 404 0.411 ms - 149
app.ts:
import express from 'express';
import morgan from 'morgan';
import favicon from 'serve-favicon';
import path from 'path';
import cors from 'cors';
import { errorManager } from './middlewares/errors_middleware.js';
import { ordersRouter } from './routers/OrdersRouter.js';
import { usersRouter } from './routers/UsersRouter.js';
import { createServer } from 'http';
import { Server } from 'socket.io';
export const app = express();
const httpServer = createServer(app);
const io = new Server(httpServer, {
cors: {
origin: '*',
},
});
io.on('connection', (socket) => {
console.log('HELLO');
});
app.use(favicon(path.join('.', 'public', 'favicon.ico')));
app.use(cors());
app.use(morgan('dev'));
app.use(express.json());
app.get('/', (_req, res, next) => {
res.send('H');
next();
});
Routers
app.use('/orders', ordersRouter);
app.use('/users', usersRouter);
app.use(errorManager);
index.ts:
import http from 'http';
import createDebug from 'debug';
import { app } from './app.js';
import { dbConnect } from './dbconnect/dbconnect.js';
const debug = createDebug('StoryLine:INDEX');
const port = 3300;
const server = http.createServer(app);
server.on('listening', () => {
const addr = server.address();
if (addr === null) return;
let bind: string;
if (typeof addr === 'string') {
bind = 'pipe ' + addr;
else {
bind =
addr.address === '::'
? `http://localhost:${addr?.port}`
: `port ${addr?.port}`;
}
debug(`SERVER: Listening on: ${bind}`);
});
server.on('error', (error: Error, response: http.ServerResponse) => {
response.write(error.message);
response.end();
});
dbConnect()
.then((mongoose) => {
debug(
'Database connection -> SUCCESSFUL: ',
mongoose.connection.db.databaseName
);
server.listen(port);
})
.catch((error) => {
debug('Database connection -> COULD NOT CONNECT');
server.emit(error);
});
I simply want to get a console.log telling me that a user is connecting. I have tried following the Socket.io docs for express but its not working for me.