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FreeMarker template error!
Expression account is undefined on line 226, column 108 in WEB-INF/templates/view/blog/userIndex.html. The problematic instruction: ---------- ==> ${account.nick?if_exists} [on line 226, column 106 in WEB-INF/templates/view/blog/userIndex.html] ---------- Java backtrace for programmers: ---------- freemarker.core.InvalidReferenceException: Expression account is undefined on line 226, column 108 in WEB-INF/templates/view/blog/userIndex.html. at freemarker.core.TemplateObject.assertNonNull(TemplateObject.java:124) at freemarker.core.TemplateObject.invalidTypeException(TemplateObject.java:134) at freemarker.core.Dot._getAsTemplateModel(Dot.java:78) at freemarker.core.Expression.getAsTemplateModel(Expression.java:89) at freemarker.core.BuiltIn$if_existsBI._getAsTemplateModel(BuiltIn.java:676) at freemarker.core.Expression.getAsTemplateModel(Expression.java:89) at freemarker.core.Expression.getStringValue(Expression.java:93) at freemarker.core.DollarVariable.accept(DollarVariable.java:76) at freemarker.core.Environment.visit(Environment.java:196) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:196) at freemarker.core.Environment.process(Environment.java:176) at freemarker.template.Template.process(Template.java:231) at com.opensymphony.webwork.views.freemarker.FreemarkerServlet.process(FreemarkerServlet.java:223) at com.opensymphony.webwork.views.freemarker.FreemarkerServlet.doGet(FreemarkerServlet.java:45) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481) at com.opensymphony.webwork.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:116) at com.opensymphony.webwork.dispatcher.WebWorkResultSupport.execute(WebWorkResultSupport.java:101) at com.opensymphony.xwork.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:300) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:198) at com.zframework.system.interceptor.ExceptionHandlerInterceptor.intercept(ExceptionHandlerInterceptor.java:62) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.interceptor.DefaultWorkflowInterceptor.intercept(DefaultWorkflowInterceptor.java:125) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:32) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:32) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:32) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:32) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.webwork.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:136) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:32) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:32) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:146) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:32) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:32) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:32) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:94) at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:180) at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:113) at com.opensymphony.webwork.dispatcher.DispatcherUtils.serviceAction(DispatcherUtils.java:202) at com.opensymphony.webwork.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:184) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.zframework.system.filter.GZIPFilter.doFilter(GZIPFilter.java:58) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:75) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.opensymphony.clickstream.ClickstreamFilter.doFilter(ClickstreamFilter.java:56) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.opensymphony.clickstream.ClickstreamFilter.doFilter(ClickstreamFilter.java:56) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619)