title: Spotify API Illegal redirect_uri
body: <p>I'm trying to progress through the Spotify developer API tutorial but when I try to access the user login page I get this error. I've triple checked that the URI in the code matches the one on MyApplications page but it still won't work. 
  Here's the script, </p>
  
  <pre><code>var express = require('express'); // Express web server framework
  var request = require('request'); // "Request" library
  var querystring = require('querystring');
  var cookieParser = require('cookie-parser');
  
  var client_id = id;
  var client_secret = secret;
  var redirect_uri = "http://localhost:8888/callback";
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/nEzeo.png" rel="noreferrer">Image of error code and MyApplications page</a></p>
  
  <p>I'm not sure what I'm doing wrong but I've been going over it for hours now, can someone help?</p>