diff --git a/Chapter11/bookstore-error-handling/app.js b/Chapter11/bookstore-error-handling/app.js
index b3b9116..e18629b 100644
--- a/Chapter11/bookstore-error-handling/app.js
+++ b/Chapter11/bookstore-error-handling/app.js
@@ -40,9 +40,9 @@ app.use(function (err, req, res, next) {
   res.render("error");
 });
 
+module.exports = app;
+
 process.on("unhandledRejection", (reason, promise) => {
   console.log("Unhandled Rejection at:", promise, "reason:", reason);
   process.exit(1);
 });
-
-module.exports = app;
diff --git a/Chapter11/bookstore-error-handling/bookstore-web-appcd/app.js b/Chapter11/bookstore-error-handling/bookstore-web-appcd/app.js
deleted file mode 100644
index 62dff0d..0000000
--- a/Chapter11/bookstore-error-handling/bookstore-web-appcd/app.js
+++ /dev/null
@@ -1,41 +0,0 @@
-var createError = require('http-errors');
-var express = require('express');
-var path = require('path');
-var cookieParser = require('cookie-parser');
-var logger = require('morgan');
-
-var indexRouter = require('./routes/index');
-var usersRouter = require('./routes/users');
-
-var app = express();
-
-// view engine setup
-app.set('views', path.join(__dirname, 'views'));
-app.set('view engine', 'ejs');
-
-app.use(logger('dev'));
-app.use(express.json());
-app.use(express.urlencoded({ extended: false }));
-app.use(cookieParser());
-app.use(express.static(path.join(__dirname, 'public')));
-
-app.use('/', indexRouter);
-app.use('/users', usersRouter);
-
-// catch 404 and forward to error handler
-app.use(function(req, res, next) {
-  next(createError(404));
-});
-
-// error handler
-app.use(function(err, req, res, next) {
-  // set locals, only providing error in development
-  res.locals.message = err.message;
-  res.locals.error = req.app.get('env') === 'development' ? err : {};
-
-  // render the error page
-  res.status(err.status || 500);
-  res.render('error');
-});
-
-module.exports = app;
diff --git a/Chapter11/bookstore-error-handling/bookstore-web-appcd/bin/www b/Chapter11/bookstore-error-handling/bookstore-web-appcd/bin/www
deleted file mode 100755
index 8a2db42..0000000
--- a/Chapter11/bookstore-error-handling/bookstore-web-appcd/bin/www
+++ /dev/null
@@ -1,90 +0,0 @@
-#!/usr/bin/env node
-
-/**
- * Module dependencies.
- */
-
-var app = require('../app');
-var debug = require('debug')('bookstore-web-appcd:server');
-var http = require('http');
-
-/**
- * Get port from environment and store in Express.
- */
-
-var port = normalizePort(process.env.PORT || '3000');
-app.set('port', port);
-
-/**
- * Create HTTP server.
- */
-
-var server = http.createServer(app);
-
-/**
- * Listen on provided port, on all network interfaces.
- */
-
-server.listen(port);
-server.on('error', onError);
-server.on('listening', onListening);
-
-/**
- * Normalize a port into a number, string, or false.
- */
-
-function normalizePort(val) {
-  var port = parseInt(val, 10);
-
-  if (isNaN(port)) {
-    // named pipe
-    return val;
-  }
-
-  if (port >= 0) {
-    // port number
-    return port;
-  }
-
-  return false;
-}
-
-/**
- * Event listener for HTTP server "error" event.
- */
-
-function onError(error) {
-  if (error.syscall !== 'listen') {
-    throw error;
-  }
-
-  var bind = typeof port === 'string'
-    ? 'Pipe ' + port
-    : 'Port ' + port;
-
-  // handle specific listen errors with friendly messages
-  switch (error.code) {
-    case 'EACCES':
-      console.error(bind + ' requires elevated privileges');
-      process.exit(1);
-      break;
-    case 'EADDRINUSE':
-      console.error(bind + ' is already in use');
-      process.exit(1);
-      break;
-    default:
-      throw error;
-  }
-}
-
-/**
- * Event listener for HTTP server "listening" event.
- */
-
-function onListening() {
-  var addr = server.address();
-  var bind = typeof addr === 'string'
-    ? 'pipe ' + addr
-    : 'port ' + addr.port;
-  debug('Listening on ' + bind);
-}
diff --git a/Chapter11/bookstore-error-handling/bookstore-web-appcd/package.json b/Chapter11/bookstore-error-handling/bookstore-web-appcd/package.json
deleted file mode 100644
index 65256ae..0000000
--- a/Chapter11/bookstore-error-handling/bookstore-web-appcd/package.json
+++ /dev/null
@@ -1,16 +0,0 @@
-{
-  "name": "bookstore-web-appcd",
-  "version": "0.0.0",
-  "private": true,
-  "scripts": {
-    "start": "node ./bin/www"
-  },
-  "dependencies": {
-    "cookie-parser": "~1.4.4",
-    "debug": "~2.6.9",
-    "ejs": "~2.6.1",
-    "express": "~4.16.1",
-    "http-errors": "~1.6.3",
-    "morgan": "~1.9.1"
-  }
-}
diff --git a/Chapter11/bookstore-error-handling/bookstore-web-appcd/public/stylesheets/style.css b/Chapter11/bookstore-error-handling/bookstore-web-appcd/public/stylesheets/style.css
deleted file mode 100644
index 9453385..0000000
--- a/Chapter11/bookstore-error-handling/bookstore-web-appcd/public/stylesheets/style.css
+++ /dev/null
@@ -1,8 +0,0 @@
-body {
-  padding: 50px;
-  font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
-}
-
-a {
-  color: #00B7FF;
-}
diff --git a/Chapter11/bookstore-error-handling/bookstore-web-appcd/routes/index.js b/Chapter11/bookstore-error-handling/bookstore-web-appcd/routes/index.js
deleted file mode 100644
index ecca96a..0000000
--- a/Chapter11/bookstore-error-handling/bookstore-web-appcd/routes/index.js
+++ /dev/null
@@ -1,9 +0,0 @@
-var express = require('express');
-var router = express.Router();
-
-/* GET home page. */
-router.get('/', function(req, res, next) {
-  res.render('index', { title: 'Express' });
-});
-
-module.exports = router;
diff --git a/Chapter11/bookstore-error-handling/bookstore-web-appcd/routes/users.js b/Chapter11/bookstore-error-handling/bookstore-web-appcd/routes/users.js
deleted file mode 100644
index 623e430..0000000
--- a/Chapter11/bookstore-error-handling/bookstore-web-appcd/routes/users.js
+++ /dev/null
@@ -1,9 +0,0 @@
-var express = require('express');
-var router = express.Router();
-
-/* GET users listing. */
-router.get('/', function(req, res, next) {
-  res.send('respond with a resource');
-});
-
-module.exports = router;
diff --git a/Chapter11/bookstore-error-handling/bookstore-web-appcd/views/error.ejs b/Chapter11/bookstore-error-handling/bookstore-web-appcd/views/error.ejs
deleted file mode 100644
index 7cf94ed..0000000
--- a/Chapter11/bookstore-error-handling/bookstore-web-appcd/views/error.ejs
+++ /dev/null
@@ -1,3 +0,0 @@
-<h1><%= message %></h1>
-<h2><%= error.status %></h2>
-<pre><%= error.stack %></pre>
diff --git a/Chapter11/bookstore-error-handling/bookstore-web-appcd/views/index.ejs b/Chapter11/bookstore-error-handling/bookstore-web-appcd/views/index.ejs
deleted file mode 100644
index 7b7a1d6..0000000
--- a/Chapter11/bookstore-error-handling/bookstore-web-appcd/views/index.ejs
+++ /dev/null
@@ -1,11 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <title><%= title %></title>
-    <link rel='stylesheet' href='/stylesheets/style.css' />
-  </head>
-  <body>
-    <h1><%= title %></h1>
-    <p>Welcome to <%= title %></p>
-  </body>
-</html>
diff --git a/Chapter11/bookstore-error-handling/views/inventory.ejs b/Chapter11/bookstore-error-handling/views/inventory.ejs
index 6320d23..c974047 100644
--- a/Chapter11/bookstore-error-handling/views/inventory.ejs
+++ b/Chapter11/bookstore-error-handling/views/inventory.ejs
@@ -11,7 +11,6 @@
             <li><%= book.title %> - <%= book.author %></li>
         <% } %>
     </ul>
-
     <h2>Add Book:</h2>
     <form action="/inventory/add" method="POST">
         <label for="title">Title</label>