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java.lang.NullPointerException: 	at com.sun.enterprise.web.WebDeployer.loadWebModuleConfig(WebDeployer.java:170)	at com.sun.enterprise.web.WebDeployer.load(WebDeployer.java:202)	at com.sun.enterprise.web.WebDeployer.load(WebDeployer.java:63)	at com.sun.enterprise.v3.server.ApplicationLifecycle.load(ApplicationLifecycle.java:499)	at com.sun.enterprise.v3.server.ApplicationLifecycle.enable(ApplicationLifecycle.java:236)	at org.glassfish.deployment.admin.EnableCommand.execute(EnableCommand.java:166)	at com.sun.enterprise.v3.admin.CommandRunner$2.execute(CommandRunner.java:297)	at com.sun.enterprise.v3.admin.CommandRunner.doCommand(CommandRunner.java:312)	at com.sun.enterprise.v3.admin.CommandRunner.doCommand(CommandRunner.java:119)	at com.sun.enterprise.v3.admin.CommandRunner.doCommand(CommandRunner.java:99)	at org.glassfish.admingui.common.util.LocalDeploymentFacility$LocalDFCommandRunner.run(LocalDeploymentFacility.java:140)	at org.glassfish.deployment.client.AbstractDeploymentFacility.changeState(AbstractDeploymentFacility.java:119)	at org.glassfish.deployment.client.AbstractDeploymentFacility.enable(AbstractDeploymentFacility.java:284)	at org.glassfish.admingui.handlers.DeploymentHandler.changeAppStatus(DeploymentHandler.java:341)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:585)	at com.sun.jsftemplating.layout.descriptors.handler.Handler.invoke(Handler.java:422)	at com.sun.jsftemplating.layout.descriptors.LayoutElementBase.dispatchHandlers(LayoutElementBase.java:420)	at com.sun.jsftemplating.layout.descriptors.LayoutElementBase.dispatchHandlers(LayoutElementBase.java:394)	at com.sun.jsftemplating.layout.event.CommandActionListener.invokeCommandHandlers(CommandActionListener.java:132)	at com.sun.jsftemplating.layout.event.CommandActionListener.processAction(CommandActionListener.java:80)	at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)	at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:771)	at javax.faces.component.UICommand.broadcast(UICommand.java:372)	at com.sun.webui.jsf.component.WebuiCommand.broadcast(WebuiCommand.java:160)	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:475)	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:756)	at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)	at com.sun.faces.extensions.avatar.lifecycle.PartialTraversalLifecycle.execute(PartialTraversalLifecycle.java:80)	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)	at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:431)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:337)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:218)	at com.sun.webui.jsf.util.UploadFilter.doFilter(UploadFilter.java:267)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:250)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:218)	at org.apache.catalina.core.StandardWrapperValve.preInvoke(StandardWrapperValve.java:460)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:139)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:186)	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)	at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:96)	at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:187)	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:651)	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1030)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:142)	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:651)	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1030)	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:242)	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:180)	at com.sun.grizzly.http.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:633)	at com.sun.grizzly.http.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:570)	at com.sun.grizzly.http.DefaultProcessorTask.process(DefaultProcessorTask.java:827)	at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:152)	at com.sun.enterprise.v3.services.impl.GlassfishProtocolChain.executeProtocolFilter(GlassfishProtocolChain.java:71)	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:103)	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:89)	at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)	at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:67)	at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:56)	at com.sun.grizzly.util.WorkerThreadImpl.processTask(WorkerThreadImpl.java:325)	at com.sun.grizzly.util.WorkerThreadImpl.run(WorkerThreadImpl.java:184)