title: java.lang.IllegalStateException: WEB9031: WebappClassLoader unable to load resource [org.apache.xerces.impl.dv.dtd.DTDDVFactoryImpl]
body: <p>I got this error from GlassFish while (re)deploying an application:</p>
  
  <pre><code>com.sun.faces.config.ConfigurationException:
  java.util.concurrent.ExecutionException:
  org.apache.xerces.impl.dv.ObjectFactory$ConfigurationError: Provider org.apache.xerces.impl.dv.dtd.DTDDVFactoryImpl could not be instantiated: 
  java.lang.IllegalStateException: WEB9031: WebappClassLoader unable to load resource [org.apache.xerces.impl.dv.dtd.DTDDVFactoryImpl], because it has not yet been started, or was already stopped
  </code></pre>
  
  <p>I stopped GlassFish, clean and build the application, deployed the application and this was the result.</p>