Is there any way to fix this code?(POST Logger w/ formData)

My problem is that my POST logger is not logging the requests from my javascript. Here is the code for each:

1. Client Side

    // JavaScript code to handle form submission
    const form = $("#register-form");
   
    form.submit(function(event) {
       event.preventDefault(); // prevent the form from submitting normally
   
    const formData = form.serialize(); // serialize the form data
   
    $.ajax({
        url: "http://localhost:3000",
        method: "POST",
       data: formData,
       success: function(response) {
       // the response was successful
       console.log("Login successful!");
    },
    error: function(xhr, status, error) {
      // an error occurred while sending the request
      console.error(error);
    }
    });
    });
   

2.Server Side

const express = require('express');
const bodyParser = require('body-parser');

const app = express();

// parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: false }));

// parse application/json
app.use(bodyParser.json());

// handle POST request
app.post('/', (req, res) => {
console.log(req.body);
res.send('Received POST request');
});

app.listen(3000, () => {
   console.log('Server listening on port 3000');
});

I had checked the server with curl, and I think that’s a client side issue. Cheers!