Update to use just a single port.

app.js

@@ -27,8 +27,4 @@ app.use(bodyParser.urlencoded({extended: false}))
 app.use(fileUpload({limits: { fileSize: 1024 * 1024}}));
 require("./routes.js")(app);
 
-if(process.env.NODE_ENV === "production"){
-    module.exports = app;
-}else{
-    app.listen(process.env.PORT);
-}
+app.listen(8000);