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java.lang.NullPointerException: 	at org.zanata.file.FileSystemPersistService.hasPersistedDocument(FileSystemPersistService.java:145)	at sun.reflect.GeneratedMethodAccessor279.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)	at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)	at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:77)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)	at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:186)	at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:104)	at org.zanata.file.FileSystemPersistService_$$_javassist_seam_48.hasPersistedDocument(FileSystemPersistService_$$_javassist_seam_48.java)	at org.zanata.action.ProjectIterationFilesAction.hasOriginal(ProjectIterationFilesAction.java:516)	at sun.reflect.GeneratedMethodAccessor278.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)	at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)	at org.zanata.seam.interceptor.CachedMethodResultInterceptor.aroundInvoke(CachedMethodResultInterceptor.java:94)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:77)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.security.SecurityInterceptor.aroundInvoke(SecurityInterceptor.java:163)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.core.SynchronizationInterceptor.aroundInvoke(SynchronizationInterceptor.java:35)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)	at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:186)	at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:104)	at org.zanata.action.ProjectIterationFilesAction_$$_javassist_seam_46.hasOriginal(ProjectIterationFilesAction_$$_javassist_seam_46.java)	at sun.reflect.GeneratedMethodAccessor277.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:335)	at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:280)	at org.jboss.el.parser.AstMethodSuffix.getValue(AstMethodSuffix.java:59)	at org.jboss.el.parser.AstValue.getValue(AstValue.java:67)	at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)	at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)	at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)	at javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:419)	at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1172)	at org.richfaces.component.UIDataAdaptor$2.processComponent(UIDataAdaptor.java:114)	at org.richfaces.component.UIDataAdaptor$ComponentVisitor.process(UIDataAdaptor.java:1425)	at org.richfaces.model.ArrangeableModel.walk(ArrangeableModel.java:113)	at org.richfaces.component.UIDataAdaptor.walk(UIDataAdaptor.java:809)	at org.richfaces.component.UIDataAdaptor.iterate(UIDataAdaptor.java:783)	at org.richfaces.component.UIDataAdaptor.processDecodesChildren(UIDataAdaptor.java:859)	at org.richfaces.component.UIDataAdaptor.processDecodes(UIDataAdaptor.java:821)	at javax.faces.component.UIForm.processDecodes(UIForm.java:225)	at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1182)	at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1182)	at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:925)	at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:163)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)	at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)	at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)	at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)	at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)	at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)	at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)	at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at org.zanata.seam.interceptor.MonitoringWrapper.doFilter(MonitoringWrapper.java:70)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at org.zanata.servlet.GWTCacheControlFilter.doFilter(GWTCacheControlFilter.java:63)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149)	at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50)	at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50)	at org.jboss.security.negotiation.NegotiationAuthenticator$WrapperValve.invoke(NegotiationAuthenticator.java:336)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:389)	at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:145)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:336)	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:653)	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:920)	at java.lang.Thread.run(Thread.java:662)