title: web.xml error page does not work in case of FileNotFoundException
body: <p>I have some problems with customs error pages and their exception type.
  I have in my <code>web.xml</code> this error page;</p>
  
  <pre><code>&lt;error-page&gt;
      &lt;exception-type&gt;java.io.FileNotFoundException&lt;/exception-type&gt;
      &lt;location&gt;/faces/error.xhtml&lt;/location&gt;
  &lt;/error-page&gt;
  </code></pre>
  
  <p>This error ocurrs when I click in a link and the JSF file does not exist. My problem is when this error happens, the web page does not redirect to my <code>error.xhtml</code> page.</p>
  
  <p>How is this caused and how can I solve it?</p>