Hostname should be a string

[knoxcard]

/usr/lib/node_modules/node-redmine/lib/redmine.js:31
if (typeof host !== 'string') throw new Error('hostname should be a String !
^
Error: hostname should be a String !
at Object.Redmine (/usr/lib/node_modules/node-redmine/lib/redmine.js:31:39)
at Object. (/home/justin/abr/redmine.js:3:15)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:945:3

here is my code...

var Redmine = require('node-redmine');

var redmine = new Redmine({
host: 'redmine.updatepromise.com',
apiKey: 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
});

// get issue
redmine.getIssues({project_id: 9088}, function(err, data) {
if (err) {
console.log("Error: " + err.message);
return;
}

console.log("Issues:");
console.log(data);
});