Cannot read property 'forEach' of undefined

[saadi123]

I'm trying to create an APP using Instagram API. I've generated valid authorization token but it gives me an error: Cannot read property 'forEach' of undefined whenever I try to run the nodejs code.

The code is like this:

var express = require('express');
var bodyParser = require('body-parser');

//Create an express app
var app = express();

//grab instagram package
var ig = require('instagram-node').instagram();

//tell node where to look for resources
app.use(express.static(__dirname + '/public'))

//set view engine to ejs
app.set('view engine', 'ejs');


app.get('/', function(req, res, next){
        ig.use ({
                access_token: 'My-Token',
                /*client_id: 'MY-ID',
                client_secret: 'MY-SECRET-ID'*/
        });
         ig.media_popular(function(err, medias, remaining, limit){
        //if (err) return next(err);
        res.render('pages/index', {grams: medias});
                });
        });

app.listen(8080);

console.log("The app started and the server is up and running...");```




However, when I try to generate the error by adding lines like:

`if (err) return next(err);`

It gives the following error: Error: APINotFoundError: invalid media id

What does it even mean? I mean I haven't entered any media ID.

Kindly help me.