Error: http.Server.listen() was called more than once which is not allowed. (in cPanel)

I am trying to deploy my app or API on shared hosting, but I keep on encountering an error that says Error: http.Server.listen() was called more than once which is not allowed.

I have no idea why this is happening my whole code have just a single server.listen and one app.listen

this is my server.js code --

const express = require('express');const bodyParser = require('body-parser');const cookieParser = require('cookie-parser');const routes = require('./routes/route');const essentials = require('./essentials');const admin = require('./firebaseAdminSDK');const http = require('http');const WebSocket = require('ws');require('dotenv-safe').config();const { SECRET_KEY } = process.env;const AUTH = admin.auth();const DB = admin.firestore();const STORAGE = admin.storage();const userConnections = new Map();const app = express();const server = http.createServer(app);const wss = new WebSocket.Server({ server });const PORT = process.env.PORT || 5000;app.use(bodyParser.json({ limit: '10mb' }));app.use(bodyParser.urlencoded({ limit: '10mb', extended: true }));app.use(cookieParser());app.use('/', routes); app.listen(PORT, () => {  console.log('Server is listening on Port:', PORT);});server.listen(8000 () => {  console.log('websocket server started on port 8000');});...there is more code below around of 400 lines but that is not related to it this is the main code.

this is how i am creating the application

extra information-Node.js version on my local machine is 20.9.0 but I could find only the closest that is 20.12.2/19.9.0

it works great on my local machine and I have just a single server.listen in my whole server code as I have given already

doesn't matter I select development mode or production it gives same error

this is how it's currently looking like