NodeJs - Error: error:0906D06C:PEM routines:PEM_read_bio:no start line

I am trying to use godaddy ssl certificates on ec2. But getting this error.

Error: error:0906D06C:PEM routines:PEM_read_bio:no start line

Flow I used.

• openssl req -new -newkey rsa:2048 -nodes -keyout foo.com.key -out foo.com.csr

• used foo.com.csr to generate the godaddy and got 3 files.

  3b8bc5516b18ff0.crt , 3b8bc5516b18ff0.pem and gd_bundle-g2-g1.crt

var privateKey = fs.readFileSync('3b8bc5516b18ff0.pem');
var certificate = fs.readFileSync('3b8bc5516b18ff0.crt');
/**
* And converted gd_bundele to gd0, gd1, gd2
*/
var credentials = {
  key: privateKey,
  cert: certificate,
  ca: [
    fs.readFileSync('gd0.crt'),
    fs.readFileSync('gd1.crt'),
    fs.readFileSync('gd2.crt')
  ]
};


//http.createServer(app);
var httpsServer = https.createServer(credentials, app);