Here is my code:
var express = require('express');
var app = module.exports = express.createServer();
// Configuration
app.configure(function(){
  app.use(express.bodyParser());
  app.use(app.router);
  app.use(express.static(__dirname + '/public'));
});
app.set('view engine', 'ejs');
app.set('view options', {
    layout: false
});
app.get('/', function(req, res) {
  res.render('index', {
    message : 'De groeten'
  });
});
app.listen(3000);
console.log("Express server listening on port %d in %s mode", app.address().port, app.settings.env);
I'm getting error as:
Error: Cannot find module 'ejs'
    at Function._resolveFilename (module.js:317:11)
    at Function._load (module.js:262:25)
    at require (module.js:346:19)
    at View.templateEngine (/Users/niroj/local/node/lib/node_modules/express/lib/view/view.js:133:38)
    at Function.compile (/Users/niroj/local/node/lib/node_modules/express/lib/view.js:65:17)
    at ServerResponse._render (/Users/niroj/local/node/lib/node_modules/express/lib/view.js:414:18)
    at ServerResponse.render (/Users/niroj/local/node/lib/node_modules/express/lib/view.js:315:17)
    at /Users/niroj/Sites/soldhere.in/app.js:26:7
    at callbacks (/Users/niroj/local/node/lib/node_modules/express/lib/router/index.js:272:11)
    at param (/Users/niroj/local/node/lib/node_modules/express/lib/router/index.js:246:11
In my folder, I have ejs installed in node_modules which I got using npm install ejs.
 
How to fix it?