FreeMarker template error: Java method "org.ofbiz.product.category.CategoryContentWrapper.get(String, String)" threw an exception when invoked on org.ofbiz.product.category.CategoryContentWrapper object "org.ofbiz.product.category.CategoryContentWrapper@4f0cabf9"; see cause exception in the Java stack trace. ---- FTL stack trace ("~" means nesting-related): - Failed at: #assign categoryName = categoryConten... [in template "component://ktm/template/includes/ShopBar.ftl" at line 6, column 5] ---- Java stack trace (for programmers): ---- freemarker.core._TemplateModelException: [... Exception message was already printed; see it above ...] at freemarker.ext.beans._MethodUtil.newInvocationTemplateModelException(_MethodUtil.java:289) at freemarker.ext.beans._MethodUtil.newInvocationTemplateModelException(_MethodUtil.java:252) at freemarker.ext.beans.SimpleMethodModel.exec(SimpleMethodModel.java:74) at freemarker.core.MethodCall._eval(MethodCall.java:65) at freemarker.core.Expression.eval(Expression.java:81) at freemarker.core.DefaultToExpression._eval(DefaultToExpression.java:84) at freemarker.core.Expression.eval(Expression.java:81) at freemarker.core.Assignment.accept(Assignment.java:134) at freemarker.core.Environment.visit(Environment.java:326) at freemarker.core.Environment.visit(Environment.java:332) at freemarker.core.Environment.visit(Environment.java:332) at freemarker.core.Environment.process(Environment.java:305) at org.ofbiz.base.util.template.FreeMarkerWorker.renderTemplate(FreeMarkerWorker.java:261) 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:1321) at org.ofbiz.widget.model.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:98) at org.ofbiz.widget.model.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:280) at org.ofbiz.widget.model.ModelScreen.renderScreenString(ModelScreen.java:164) at org.ofbiz.widget.renderer.ScreenRenderer.render(ScreenRenderer.java:136) at org.ofbiz.widget.renderer.ScreenRenderer.render(ScreenRenderer.java:98) at sun.reflect.GeneratedMethodAccessor78.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at freemarker.ext.beans.BeansWrapper.invokeMethod(BeansWrapper.java:1458) at freemarker.ext.beans.ReflectionCallableMemberDescriptor.invokeMethod(ReflectionCallableMemberDescriptor.java:56) at freemarker.ext.beans.MemberAndArguments.invokeMethod(MemberAndArguments.java:51) at freemarker.ext.beans.OverloadedMethodsModel.exec(OverloadedMethodsModel.java:61) at freemarker.core.MethodCall._eval(MethodCall.java:65) at freemarker.core.Expression.eval(Expression.java:81) at freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:96) at freemarker.core.DollarVariable.accept(DollarVariable.java:59) at freemarker.core.Environment.visit(Environment.java:326) at freemarker.core.Environment.visit(Environment.java:332) at freemarker.core.Environment.process(Environment.java:305) at org.ofbiz.base.util.template.FreeMarkerWorker.renderTemplate(FreeMarkerWorker.java:261) at org.ofbiz.widget.model.HtmlWidget.renderHtmlTemplate(HtmlWidget.java:167) at org.ofbiz.widget.model.HtmlWidget$HtmlTemplate.renderWidgetString(HtmlWidget.java:216) at org.ofbiz.widget.model.HtmlWidget.renderWidgetString(HtmlWidget.java:140) at org.ofbiz.widget.model.ModelScreenWidget$PlatformSpecific.renderWidgetString(ModelScreenWidget.java:1321) at org.ofbiz.widget.model.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:98) at org.ofbiz.widget.model.ModelScreenWidget$Container.renderWidgetString(ModelScreenWidget.java:459) at org.ofbiz.widget.model.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:98) at org.ofbiz.widget.model.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:280) at org.ofbiz.widget.model.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:98) at org.ofbiz.widget.model.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:280) at org.ofbiz.widget.model.ModelScreen.renderScreenString(ModelScreen.java:164) at org.ofbiz.widget.model.ScreenFactory.renderReferencedScreen(ScreenFactory.java:214) 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:1001) at org.ofbiz.webapp.control.RequestHandler.doRequest(RequestHandler.java:653) at org.ofbiz.webapp.control.ControlServlet.doGet(ControlServlet.java:213) at org.ofbiz.product.category.SeoControlServlet.doGet(SeoControlServlet.java:89) at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:720) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:466) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:391) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:318) at org.ofbiz.product.category.ftl.CatalogUrlSeoTransform.forwardCategoryUri(CatalogUrlSeoTransform.java:663) at org.ofbiz.product.category.ftl.CatalogUrlSeoTransform.forwardUri(CatalogUrlSeoTransform.java:514) at org.ofbiz.product.category.CatalogUrlSeoFilter.doFilter(CatalogUrlSeoFilter.java:65) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522) at org.apache.coyote.ajp.AbstractAjpProcessor.process(AbstractAjpProcessor.java:868) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1502) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1458) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$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) Caused by: java.lang.NullPointerException