title: Parse Dashboard is blank
body: <p>I've set up of Parse-Server with mongodb on same instance, in amazon, EC2.</p>
  
  <p>I can't get acess to parse-dashboard because I didn't install SSL certificate, so I used nginx + Let's Encrypt to solve this.</p>
  
  <p>But now when I try to acess parse-server I get:</p>
  
  <p>Cannot Get login</p>
  
  <p>How to solve this ? Here is my dashboard config:</p>
  
  <pre><code>{
    "apps": [
      {
          "serverURL": "http://mysvrurl/parse", 
          "appId": "myappid",
          "masterKey": "mykey",
          "appName": "appname"
      }
    ],
    "users": [
      {
        "user":"user", 
        "pass":"p@ssw0rd"
      }
  </code></pre>
  
  <p>My index.js:</p>
  
  <pre><code>var api = new ParseServer({
    databaseURI: databaseUri || 'mongodb://localhost:27017/',
    cloud: process.env.CLOUD_CODE_MAIN || __dirname + '/cloud/main.js',
    appId: process.env.APP_ID || 'myappid',
    masterKey: process.env.MASTER_KEY || 'mykey', //Ad$
    serverURL: process.env.SERVER_URL || 'http://localhost:1337/parse',$
    liveQuery: {
      classNames: ["Posts", "Comments"] // List of classes to support f$
  
   }
  });
  </code></pre>