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Expression catnews[0] is undefined on line 95, column 16 in tradeindex.ftl. The problematic instruction: ---------- ==> list catnews[0].newss?if_exists as z [on line 95, column 9 in tradeindex.ftl] ---------- Java backtrace for programmers: ---------- freemarker.core.InvalidReferenceException: Expression catnews[0] is undefined on line 95, column 16 in tradeindex.ftl. 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:677) at freemarker.core.Expression.getAsTemplateModel(Expression.java:89) at freemarker.core.IteratorBlock.accept(IteratorBlock.java:87) 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:232) at net.kingtrans.util.CreateHTML.createHTMLFile(CreateHTML.java:59) at net.kingtrans.news.proxy.CatProxy.createTradeIndexHTML(CatProxy.java:764) at net.kingtrans.news.proxy.CatProxy.createHTML(CatProxy.java:60) at net.kingtrans.news.proxy.CatProxy.createAllHTML(CatProxy.java:50) at net.kingtrans.news.servlet.CatServlet.createAllHTML(CatServlet.java:124) at net.kingtrans.news.servlet.CatServlet.process(CatServlet.java:59) at net.kingtrans.news.servlet.CatServlet.doPost(CatServlet.java:28) at net.kingtrans.news.servlet.CatServlet.doGet(CatServlet.java:33) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at net.kingtrans.common.XDaemon.service(XDaemon.java:30) at net.kingtrans.common.AdminXDaemon.service(AdminXDaemon.java:46) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at net.kingtrans.common.EncodingFilter.doFilter(EncodingFilter.java:27) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282) at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754) at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684) at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:595)