The exception persist. I added the artifact at web project and also checked if it was there at the lib when compiled and also checked at glassfish lib folder, it is at both places. I still can't figure what is the problem with it, it runs perfectly in my mock, as I said before, but is not working when invoked by web.

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SEVERE: Error Rendering View[/protected/crud/planner.xhtml]

javax.el.ELException: /protected/crud/planner.xhtml: com.thoughtworks.xstream.io.StreamException: Cannot create XmlPullParser

at com.sun.faces.facelets.compiler.TextInstruction.write(TextInstruction.java:88)

at com.sun.faces.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:82)

at com.sun.faces.facelets.compiler.UILeaf.encodeAll(UILeaf.java:183)

at javax.faces.render.Renderer.encodeChildren(Renderer.java:168)

at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845)

at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:304)

at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:105)

at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845)

at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:304)

at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:105)

at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845)

at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1757)

at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1760)

at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:402)

at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)

at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288)

at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121)

at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)

at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)

at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594)

at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)

at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)

at com.my.proj.view.listener.LoginFilter.doFilter(LoginFilter.java:40)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)

at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)

at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)

at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)

at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)

at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)

at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)

at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)

at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)

at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)

at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)

at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)

at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)

at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)

at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)

at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)

at com.sun.grizzly.ContextTask.run(ContextTask.java:71)

at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)

at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)

at java.lang.Thread.run(Thread.java:722)

Caused by: com.thoughtworks.xstream.io.StreamException: Cannot create XmlPullParser

at com.thoughtworks.xstream.io.xml.AbstractXppDriver.createReader(AbstractXppDriver.java:60)

at com.thoughtworks.xstream.XStream.fromXML(XStream.java:895)

at org.drools.planner.config.XmlSolverFactory.configure(XmlSolverFactory.java:87)

at org.drools.planner.config.XmlSolverFactory.configure(XmlSolverFactory.java:77)

at com.my.proj.planner.plan.ExecutePlan.doPlan(ExecutePlan.java:217)

at com.my.proj.planner.plan.ExecutePlan.planWorkOrders(ExecutePlan.java:206)

at com.my.proj.planner.plan.ExecutePlan.executePlanning(ExecutePlan.java:86)

at com.my.proj.view.controller.crud.PlannerCrud.runPlanner(PlannerCrud.java:187)

at com.my.proj.view.controller.crud.PlannerCrud.attributeResourceById(PlannerCrud.java:87)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at javax.el.BeanELResolver.invokeMethod(BeanELResolver.java:779)

at javax.el.BeanELResolver.invoke(BeanELResolver.java:528)

at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:257)

at com.sun.el.parser.AstValue.getValue(AstValue.java:134)

at com.sun.el.parser.AstValue.getValue(AstValue.java:183)

at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:224)

at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50)

at com.sun.faces.facelets.el.ELText$ELTextVariable.writeText(ELText.java:227)

at com.sun.faces.facelets.el.ELText$ELTextComposite.writeText(ELText.java:150)

at com.sun.faces.facelets.compiler.TextInstruction.write(TextInstruction.java:85)

... 52 more

WARNING: StandardWrapperValve[Faces Servlet]: PWC1406: Servlet.service() for servlet Faces Servlet threw exception

com.thoughtworks.xstream.io.StreamException: Cannot create XmlPullParser