title: null is not a valid include error message
body: <p>I have a liferay portlet class in which I write an init() method. After deploying it, when I place the portlet on the page it is empty and I get "null is not a valid include" error when I check the log file. But when I remove the init() method it works without problem. My init() method is as simple as this:</p>
  
  <pre><code>public void init() throws PortletException{
  }
  </code></pre>