error message

WEB/server.js

@@ -1,21 +1,29 @@
 //const io = require('socket.io')('http://localhost:3000');
 //modules
 module = '/usr/local/lib/node_modules/';
+console.log('module');
 const express = require(module + "express");
+console.log('express');
 const socketIO = require(module +"socket.io");//('http://82.165.180.114:3000');
+console.log('socketIO');
 const app = express();
+console.log('app');
 const server = app.listen(3000);
+console.log('server');
 const io=socketIO(server);
-
+console.log('io');
 io.on('connection', socket => {
     console.log("connection de l'utilisateur à l'id ". socket.id);
 })
+console.log('ioOnConnection');
 
 io.on('launchGame') , function () {
     console.log('launch the game');
     location.reload();
 }
+console.log('ioLaunchGame');
 
 server.listen(3000, () => {
     console.log('app listening on port 3000')
 });
+console.log('AppListening');