Boss machine project - repeated `POST /api/meetings` requests at index.html

The Boos Machine project is driving me nuts.
In app.js I have:

const express = require('express');
const app = express();

const cors = require('cors')
const bodyParser = require('body-parser');
const morgan = require('morgan')

const apiRouter = require('./server/api');

/* Do not change the following line! It is required for testing and allowing
*  the frontend application to interact as planned with the api server
const PORT = process.env.PORT || 4001;

// middleware for handling CORS requests from index.html

// Logging

// bodyParser

// Mount your existing apiRouter at the '/api' path.
app.use("/api", apiRouter);

// This conditional is here for testing purposes:
if (!module.parent) {
  // Add your code to start the server listening at PORT below:
  app.listen(PORT, console.log("I'm all ears at port", PORT))


My api.js is as follow (I know I have to move the child routers to separate modules, will do so as soon as I resolve this issue):

const express = require('express');

const apiRouter = express.Router();

// you need to set mergeParams: true on the router,
// if you want to access params from the parent router
const meetingsRouter = express.Router({ mergeParams: true });

// you can nest routers by attaching them as middleware:
apiRouter.use("/meetings", meetingsRouter);"/", (req, res, next) => {

module.exports = apiRouter;

So, as soon as I open index.html my frontend somehow starts sending requests tlikePOST /api/meetings 200 0.883 ms - 2 and keep doing this until I navigate away. As soon as I am back to the landing page, the same happens:

And my FE receives apparently keeps rendering an array of empty meetings which are being created infinitely:
(cannot attach a second media file apparently but this is what it looks like)
Why would all this be happening? is it a bug? I guess it cannot be this as many would have had the same experience and reported it.
I honestly cannot see what I could have done wrong… As I said, it is just driving me crazy!
Thanks in advance!