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java.lang.NullPointerException: 	at org.openl.rules.webstudio.web.tableeditor.ShowTableBean.isDispatcherValidationNode(ShowTableBean.java:201)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at javax.el.BeanELResolver.getValue(BeanELResolver.java:87)	at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)	at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)	at org.apache.el.parser.AstValue.getValue(AstValue.java:183)	at org.apache.el.parser.AstNot.getValue(AstNot.java:44)	at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:185)	at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)	at com.sun.faces.facelets.tag.TagAttributeImpl.getObject(TagAttributeImpl.java:329)	at com.sun.faces.facelets.tag.TagAttributeImpl.getBoolean(TagAttributeImpl.java:136)	at com.sun.faces.facelets.tag.jstl.core.IfHandler.apply(IfHandler.java:91)	at javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:98)	at com.sun.faces.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:166)	at com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:93)	at com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:86)	at com.sun.faces.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:152)	at com.sun.faces.application.view.FaceletViewHandlingStrategy.buildView(FaceletViewHandlingStrategy.java:838)	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:100)	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.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)	at org.openl.rules.webstudio.filter.ThreadLocalFilter.doFilter(ThreadLocalFilter.java:32)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)	at org.openl.rules.webstudio.filter.SessionTimeoutFilter.doFilter(SessionTimeoutFilter.java:60)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:322)	at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116)	at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)	at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:146)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)	at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:182)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)	at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:184)	at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:155)	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)	at org.openl.rules.webstudio.filter.WebResourceFilter.doFilter(WebResourceFilter.java:71)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)	at java.lang.Thread.run(Unknown Source)