{"error":{"status":404,"message":"Invalid username"}} Error (Nodejs)

[burhnn]

Plan

Free/Premium

Country

Turkey

Language

Nodejs

My Question or Issue

From this code:

const express = require('express')
const app = express()

var client_id = 'asd';
var client_secret = 'asd';

// Base64 encoding of the client_id and client_secret
var encoded = btoa(client_id + ':' + client_secret);

// Fetch request to Spotify API
fetch('https://accounts.spotify.com/api/token', {
  method: 'POST',
  headers: {
    'Authorization': 'Basic ' + encoded,
    'Content-Type': 'application/x-www-form-urlencoded',
  },
  body: 'grant_type=client_credentials'
})
.then(response => response.json())
.then(data => {
  var access_token = data.access_token;

  //dinlenen
  fetch('https://api.spotify.com/v1/me/player/currently-playing', {
    headers: {
      'Authorization': 'Bearer ' + access_token
    }
  })
  .then(response => response.json())
  .then(asd => {
    console.log(asd);
    //siteye çevir

    app.get('/', function (req, res) {
      res.send(asd)
    })
  })
  .catch(error => console.log(error));
}).catch(error => console.log(error));

app.listen(3000, () => {
  console.log('Server started on port 3000');
});

I am getting this output:

{ error: { status: 404, message: 'Invalid username' } }

What mistake am I making and how can I fix it?

[Ximzend]

The mistake is that you are trying to use Client Credentials with an endpoint that requires Authorization.

Since the Client Credentials flow does not include authorization, only endpoints that do not access user information can be accessed.

So, you should use the Authorization Code Flow.

[burhnn]

How will I do? If possible, is there any chance you can edit the request? 

[Ximzend]

To modify the code to work with the Authorization Code Flow, you need to make several changes.

An easier way is to use Spotify Web API Node.