title: Error: Cannot find module 'pug'
body: <p>Here is my index.js file:</p>
  
  <pre><code>const express = require('express')
  const app = express()
  
  app.set('views', __dirname + '/views');
  app.set('view engine', 'pug')
  
  app.get('/', function (req, res) {
    res.render('index', { title: 'Hey', message: 'Hello there!' })
  })
  
  
  app.listen(3333, function () {
    console.log('Example app listening on port 3333!')
  })
  </code></pre>
  
  <p>index.pug file:</p>
  
  <pre><code>html
    head
      title= title
    body
      h1= Hello
  </code></pre>
  
  <p>package.json file:</p>
  
  <pre><code>{
    "name": "@npm-private/pug_with_node",
    "version": "1.0.0",
    "description": "",
    "main": "index.js",
    "scripts": {
      "test": "echo \"Error: no test specified\" &amp;&amp; exit 1"
    },
    "keywords": [],
    "author": "",
    "license": "ISC",
    "dependencies": {
      "express": "^4.15.3",
      "jade": "^1.11.0",
      "pug": "^2.0.0-rc.2"
    }
  }
  </code></pre>
  
  <p>When I run my server file then it shows me an error. in fact, I install pug and jade both npm modules:</p>
  
  <blockquote>
    <p>Error: Cannot find module 'pug'
        at Function.Module._resolveFilename (module.js:485:15)
        at Function.Module._load (module.js:437:25)
        at Module.require (module.js:513:17)
        at require (internal/module.js:11:18)
        at new View (/home/software/node_modules/express/lib/view.js:80:30)
        at Function.render (/home/software/node_modules/express/lib/application.js:570:12)
        at ServerResponse.render (/home/software/node_modules/express/lib/response.js:971:7)
        at /home/software/Harsh Patel/pug_with_node/index.js:8:7
        at Layer.handle [as handle_request] (/home/software/node_modules/express/lib/router/layer.js:95:5)
        at next (/home/software/node_modules/express/lib/router/route.js:137:13)</p>
  </blockquote>