title: Error when configuring Spring security 4.2.1
body: <p>I'm trying to configure Spring security declaratively using the Spring 4. I created the file applicationContext-security.xml as the image below show </p>
  
  <p><a href="https://i.stack.imgur.com/FwO8y.png" rel="nofollow noreferrer">applicationContext-security</a></p>
  
  <p>When I'm running the application I'm still having the same error like </p>
  
  <pre><code>Failed to instantiate [org.springframework.security.config.SecurityNamespaceHandler]: Constructor threw exception. Check Error Log for more details.
  </code></pre>
  
  <p>Did someone already faced that issue ? Could you please help me to fix this issue ? Thanks in advance.</p>