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via GitHub by nicky508
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This exception has no message.
java.lang.NullPointerException: 	at de.ifgi.lod4wfs.factory.AdapterLOD4WFS.getFeature(AdapterLOD4WFS.java:239)	at de.ifgi.lod4wfs.factory.FactoryWFS.getFeature(FactoryWFS.java:313)	at de.ifgi.lod4wfs.facade.Facade.getFeature(Facade.java:45)	at de.ifgi.lod4wfs.web.ServletWFS.doGet(ServletWFS.java:206)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:735)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669)	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457)	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229)	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)	at org.eclipse.jetty.server.Server.handle(Server.java:368)	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)	at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:942)	at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1004)	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)