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java.lang.NullPointerException at org.springframework.expression.spel.ast.SpelNodeImpl.<init>(SpelNodeImpl.java:50) at org.springframework.expression.spel.ast.Indexer.<init>(Indexer.java:71) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.maybeEatIndexer(InternalSpelExpressionParser.java:549) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.maybeEatNonDottedNode(InternalSpelExpressionParser.java:313) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.maybeEatNode(InternalSpelExpressionParser.java:300) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.eatPrimaryExpression(InternalSpelExpressionParser.java:284) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.eatUnaryExpression(InternalSpelExpressionParser.java:275) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.eatPowerIncDecExpression(InternalSpelExpressionParser.java:236) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.eatProductExpression(InternalSpelExpressionParser.java:217) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.eatSumExpression(InternalSpelExpressionParser.java:201) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.eatRelationalExpression(InternalSpelExpressionParser.java:163) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.eatLogicalAndExpression(InternalSpelExpressionParser.java:151) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.eatLogicalOrExpression(InternalSpelExpressionParser.java:139) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.eatExpression(InternalSpelExpressionParser.java:103) at org.springframework.expression.spel.standard.InternalSpelExpressionParser.doParseExpression(InternalSpelExpressionParser.java:84) at org.springframework.expression.spel.standard.SpelExpressionParser.doParseExpression(SpelExpressionParser.java:56) at org.springframework.expression.spel.standard.SpelExpressionParser.doParseExpression(SpelExpressionParser.java:32) at org.springframework.expression.common.TemplateAwareExpressionParser.parseExpression(TemplateAwareExpressionParser.java:66) at org.springframework.binding.expression.spel.SpringELExpressionParser.parseSpelExpression(SpringELExpressionParser.java:81) at org.springframework.binding.expression.spel.SpringELExpressionParser.parseExpression(SpringELExpressionParser.java:75) at org.springframework.webflow.mvc.view.AbstractMvcView.addEmptyValueMapping(AbstractMvcView.java:479) at org.springframework.webflow.mvc.view.AbstractMvcView.addDefaultMappings(AbstractMvcView.java:461) at org.springframework.webflow.mvc.view.AbstractMvcView.bind(AbstractMvcView.java:380) at org.springframework.webflow.mvc.view.AbstractMvcView.processUserEvent(AbstractMvcView.java:216) at org.springframework.webflow.engine.ViewState.handleEvent(ViewState.java:226) at org.springframework.webflow.engine.ViewState.resume(ViewState.java:196) at org.springframework.webflow.engine.Flow.resume(Flow.java:545) at org.springframework.webflow.engine.impl.FlowExecutionImpl.resume(FlowExecutionImpl.java:258) at org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution(FlowExecutorImpl.java:169) at org.springframework.webflow.mvc.servlet.FlowHandlerAdapter.handle(FlowHandlerAdapter.java:183) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:920) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:827) at javax.servlet.http.HttpServlet.service(HttpServlet.java:814) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:801) at javax.servlet.http.HttpServlet.service(HttpServlet.java:915) at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:398) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185) at com.dailyaccess.loggingmodule.filter.UserActivityLoggingFilter.doFilter(UserActivityLoggingFilter.java:70) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:217) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:255) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:586) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:556) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:187) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:586) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:556) at com.sun.webserver.connector.nsapi.NSAPIProcessor.service(NSAPIProcessor.java:160)