FireFox and LocalHost not meshing up. goormIDE

on gormIDE, I have added a new directory and put a app.js file in it, installed express package. In my app.js file i have the following.

const express = require(“express”);
const app = express();

app.get("/", function(req, res) {
res.send(“Hey There!”);

app.listen(3000, function(){
console.log(“server has started”);

i ran node app.js and got back server has started, and i try to go to
localhost:3000 or http://localhost:3000/ and get the whatever mesage it is that says that didnt work. Ive tried port 8080, 5000, and 5 or 6 other ones with nothing. I have changed the proxy settings and every other network settings on firefox. Is there something I am missing from firefox that is different from Chrome? I am running QubesOS if that matters at all.