title: RuntimeException could not be mapped to a response, re-throwing to the HTTP container com.hp.hpl.jena.update.UpdateException
body: <p>i have a REST service for sending data to a triplestore:</p>
  
  <pre><code>VirtGraph virtGraph = new VirtGraph ("jdbc:virtuoso://localhost:1111", "demo", "demo");
  Model virtModel = new VirtModel(virtGraph);
  VirtuosoUpdateRequest vur = VirtuosoUpdateFactory.create(str, virtGraph);
  vur.exec();
  virtGraph.close();
  </code></pre>
  
  <p>and although the data are stored the response i get is:</p>
  
  <pre><code>com.sun.jersey.spi.container.ContainerResponse mapMappableContainerException
  SEVERE: The RuntimeException could not be mapped to a response, re-throwing to the HTTP container
  com.hp.hpl.jena.update.UpdateException: Convert results are FAILED.:
      at virtuoso.jena.driver.VirtuosoUpdateRequest.exec(VirtuosoUpdateRequest.java:72)
  </code></pre>
  
  <p>All the libraries needed are in the web folder of the project. Any ideas please?</p>