FreeMarker template error: The following has evaluated to null or missing: ==> prods.keySet [in template "component://rugsusa/webapp/rugsusa/includes/carouseldetail.ftl" at line 14, column 12] ---- Tip: It's the step after the last dot that caused this error, not those before it. ---- Tip: If the failing expression is known to be legally refer to something that's null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)?? ---- ---- FTL stack trace ("~" means nesting-related): - Failed at: #list prods.keySet() as productId [in template "component://rugsusa/webapp/rugsusa/includes/carouseldetail.ftl" at line 14, column 5] ---- Java stack trace (for programmers): ---- freemarker.core.InvalidReferenceException: [... Exception message was already printed; see it above ...] at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:116) at freemarker.core.UnexpectedTypeException.newDesciptionBuilder(UnexpectedTypeException.java:60) at freemarker.core.UnexpectedTypeException.<init>(UnexpectedTypeException.java:40) at freemarker.core.NonMethodException.<init>(NonMethodException.java:46) at freemarker.core.MethodCall._eval(MethodCall.java:84) at freemarker.core.Expression.eval(Expression.java:78) at freemarker.core.IteratorBlock.accept(IteratorBlock.java:58) at freemarker.core.Environment.visitByHiddingParent(Environment.java:333) at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:48) at freemarker.core.Environment.visit(Environment.java:312) at freemarker.core.MixedContent.accept(MixedContent.java:62) at freemarker.core.Environment.visit(Environment.java:312) at freemarker.core.Environment.process(Environment.java:290) at org.ofbiz.base.util.template.FreeMarkerWorker.renderTemplate(FreeMarkerWorker.java:257) at org.ofbiz.widget.model.HtmlWidget.renderHtmlTemplate(HtmlWidget.java:167) at org.ofbiz.widget.model.HtmlWidget$HtmlTemplate.renderWidgetString(HtmlWidget.java:216) at org.ofbiz.widget.model.HtmlWidget.renderWidgetString(HtmlWidget.java:140) at org.ofbiz.widget.model.ModelScreenWidget$PlatformSpecific.renderWidgetString(ModelScreenWidget.java:1319) at org.ofbiz.widget.model.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:98) at org.ofbiz.widget.model.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:280) at org.ofbiz.widget.model.ModelScreen.renderScreenString(ModelScreen.java:164) at org.ofbiz.widget.renderer.ScreenRenderer.render(ScreenRenderer.java:136) at org.ofbiz.widget.renderer.ScreenRenderer.render(ScreenRenderer.java:98) at sun.reflect.GeneratedMethodAccessor130.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at freemarker.ext.beans.BeansWrapper.invokeMethod(BeansWrapper.java:1458) at freemarker.ext.beans.ReflectionCallableMemberDescriptor.invokeMethod(ReflectionCallableMemberDescriptor.java:52) at freemarker.ext.beans.MemberAndArguments.invokeMethod(MemberAndArguments.java:48) at freemarker.ext.beans.OverloadedMethodsModel.exec(OverloadedMethodsModel.java:62) at freemarker.core.MethodCall._eval(MethodCall.java:62) at freemarker.core.Expression.eval(Expression.java:78) at freemarker.core.Expression.evalAndCoerceToString(Expression.java:82) at freemarker.core.DollarVariable.accept(DollarVariable.java:40) at freemarker.core.Environment.visit(Environment.java:312) at freemarker.core.MixedContent.accept(MixedContent.java:62) at freemarker.core.Environment.visit(Environment.java:312) at freemarker.core.Environment.include(Environment.java:2074) at freemarker.core.Include.accept(Include.java:165) at freemarker.core.Environment.visit(Environment.java:312) at freemarker.core.MixedContent.accept(MixedContent.java:62) at freemarker.core.Environment.visitByHiddingParent(Environment.java:333) at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:48) at freemarker.core.Environment.visit(Environment.java:312) at freemarker.core.MixedContent.accept(MixedContent.java:62) at freemarker.core.Environment.visitByHiddingParent(Environment.java:333) at freemarker.core.IfBlock.accept(IfBlock.java:48) at freemarker.core.Environment.visit(Environment.java:312) at freemarker.core.MixedContent.accept(MixedContent.java:62) at freemarker.core.Environment.visit(Environment.java:312) at freemarker.core.Environment.include(Environment.java:2074) at freemarker.core.Include.accept(Include.java:165) at freemarker.core.Environment.visitByHiddingParent(Environment.java:333) at freemarker.core.IfBlock.accept(IfBlock.java:48) at freemarker.core.Environment.visit(Environment.java:312) at freemarker.core.Environment.process(Environment.java:290) at org.ofbiz.base.util.template.FreeMarkerWorker.renderTemplate(FreeMarkerWorker.java:257) at org.ofbiz.widget.model.HtmlWidget.renderHtmlTemplate(HtmlWidget.java:167) at org.ofbiz.widget.model.HtmlWidget$HtmlTemplate.renderWidgetString(HtmlWidget.java:216) at org.ofbiz.widget.model.HtmlWidget.renderWidgetString(HtmlWidget.java:140) at org.ofbiz.widget.model.ModelScreenWidget$PlatformSpecific.renderWidgetString(ModelScreenWidget.java:1319) at org.ofbiz.widget.model.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:98) at org.ofbiz.widget.model.ModelScreenWidget$DecoratorSection.renderWidgetString(ModelScreenWidget.java:906) at org.ofbiz.widget.model.ModelScreenWidget$SectionsRenderer.render(ModelScreenWidget.java:127) at org.ofbiz.widget.model.ModelScreenWidget$DecoratorSectionInclude.renderWidgetString(ModelScreenWidget.java:943) at org.ofbiz.widget.model.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:98) at org.ofbiz.widget.model.ModelScreenWidget$Container.renderWidgetString(ModelScreenWidget.java:459) at org.ofbiz.widget.model.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:98) at org.ofbiz.widget.model.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:280) at org.ofbiz.widget.model.ModelScreen.renderScreenString(ModelScreen.java:164) at org.ofbiz.widget.model.ScreenFactory.renderReferencedScreen(ScreenFactory.java:211) at org.ofbiz.widget.model.ModelScreenWidget$DecoratorScreen.renderWidgetString(ModelScreenWidget.java:860) at org.ofbiz.widget.model.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:98) at org.ofbiz.widget.model.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:280) at org.ofbiz.widget.model.ModelScreen.renderScreenString(ModelScreen.java:164) at org.ofbiz.widget.renderer.ScreenRenderer.render(ScreenRenderer.java:136) at org.ofbiz.widget.renderer.ScreenRenderer.render(ScreenRenderer.java:98) at org.ofbiz.widget.renderer.macro.MacroScreenViewHandler.render(MacroScreenViewHandler.java:157) at org.ofbiz.webapp.control.RequestHandler.renderView(RequestHandler.java:991) at org.ofbiz.webapp.control.RequestHandler.doRequest(RequestHandler.java:675) at org.ofbiz.webapp.control.ControlServlet.doGet(ControlServlet.java:213) at javax.servlet.http.HttpServlet.service(HttpServlet.java:620) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:486) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:411) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:338) at com.rugsusa.util.servlet.RugsUSAProductUrlServlet.doGet(RugsUSAProductUrlServlet.java:45) at javax.servlet.http.HttpServlet.service(HttpServlet.java:620) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.ofbiz.webapp.control.ContextFilter.doFilter(ContextFilter.java:324) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748)