ComplianceOnline

FDA Issues Draft Guidance on Human Factors and Usability Engineering to Optimize Medical Device Design

  • By: Staff Editor
  • Date: November 10, 2011
Webinar All Access Pass Subscription Abstract:

In June 2011, the Food and Drug Administration issued draft guidance on using human factors and usability engineering to optimize medical device design. The aim of this guidance document is to help the medical device industry in conducting appropriate human factors testing and identifying device features that manufacturers should optimize throughout the total product life cycle.

This article gives a brief overview and summary of recommendations contained in this draft guidance.
 

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Method public java.lang.String org.ofbiz.widget.screen.ScreenRenderer.render(java.lang.String) throws org.ofbiz.base.util.GeneralException,java.io.IOException,org.xml.sax.SAXException,javax.xml.parsers.ParserConfigurationException threw an exception when invoked on org.ofbiz.widget.screen.ScreenRenderer@2287c7e8 with arguments of types [java.lang.String,] The problematic instruction: ---------- ==> ${screens.render("component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#trainings-article-detail")} [on line 9, column 17 in component://ecommerce/webapp/ecommerce/CONew2016/bestpractices/article_detail/content_Main.ftl] ---------- Java backtrace for programmers: ---------- freemarker.template.TemplateModelException: Method public java.lang.String org.ofbiz.widget.screen.ScreenRenderer.render(java.lang.String) throws org.ofbiz.base.util.GeneralException,java.io.IOException,org.xml.sax.SAXException,javax.xml.parsers.ParserConfigurationException threw an exception when invoked on org.ofbiz.widget.screen.ScreenRenderer@2287c7e8 with arguments of types [java.lang.String,] at freemarker.ext.beans.OverloadedMethodModel.exec(OverloadedMethodModel.java:134) at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:93) at freemarker.core.Expression.getAsTemplateModel(Expression.java:89) at freemarker.core.Expression.getStringValue(Expression.java:93) at freemarker.core.DollarVariable.accept(DollarVariable.java:76) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.Environment.process(Environment.java:199) at org.ofbiz.base.util.template.FreeMarkerWorker.renderTemplate(FreeMarkerWorker.java:257) at org.ofbiz.widget.screen.HtmlWidget.renderHtmlTemplate(HtmlWidget.java:225) at org.ofbiz.widget.screen.HtmlWidget$HtmlTemplate.renderWidgetString(HtmlWidget.java:270) at org.ofbiz.widget.screen.HtmlWidget.renderWidgetString(HtmlWidget.java:130) at org.ofbiz.widget.screen.ModelScreenWidget$PlatformSpecific.renderWidgetString(ModelScreenWidget.java:920) at org.ofbiz.widget.screen.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:104) at org.ofbiz.widget.screen.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:191) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:396) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:135) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:97) at sun.reflect.GeneratedMethodAccessor66.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:866) at freemarker.ext.beans.OverloadedMethodModel.exec(OverloadedMethodModel.java:104) at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:93) 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:221) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.Environment.process(Environment.java:199) at org.ofbiz.base.util.template.FreeMarkerWorker.renderTemplate(FreeMarkerWorker.java:257) at org.ofbiz.widget.screen.HtmlWidget.renderHtmlTemplate(HtmlWidget.java:225) at org.ofbiz.widget.screen.HtmlWidget$HtmlTemplate.renderWidgetString(HtmlWidget.java:270) at org.ofbiz.widget.screen.HtmlWidget.renderWidgetString(HtmlWidget.java:130) at org.ofbiz.widget.screen.ModelScreenWidget$PlatformSpecific.renderWidgetString(ModelScreenWidget.java:920) at org.ofbiz.widget.screen.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:104) at org.ofbiz.widget.screen.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:191) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:396) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:135) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:97) at org.ofbiz.widget.screen.MacroScreenViewHandler.render(MacroScreenViewHandler.java:104) at org.ofbiz.webapp.control.RequestHandler.renderView(RequestHandler.java:865) at org.ofbiz.webapp.control.RequestHandler.doRequest(RequestHandler.java:582) at org.ofbiz.webapp.control.ControlServlet.doGet(ControlServlet.java:224) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339) at com.metricstream.SEOServlet.dispatchEcommerceRequest(SEOServlet.java:287) at com.metricstream.SEOServlet.findPattern(SEOServlet.java:236) at com.metricstream.SEOServlet.doGet(SEOServlet.java:49) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.ofbiz.widget.screen.ScreenRenderException: Error rendering screen [component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#trainings-article-detail]: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object (Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:409) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:135) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:97) at sun.reflect.GeneratedMethodAccessor66.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:866) at freemarker.ext.beans.OverloadedMethodModel.exec(OverloadedMethodModel.java:104) ... 74 more Caused by: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object at org.ofbiz.base.util.ScriptUtil.executeScript(ScriptUtil.java:348) at org.ofbiz.base.util.ScriptUtil.executeScript(ScriptUtil.java:324) at org.ofbiz.widget.ModelWidgetAction$Script.runAction(ModelWidgetAction.java:416) at org.ofbiz.widget.ModelWidgetAction.runSubActions(ModelWidgetAction.java:116) at org.ofbiz.widget.screen.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:184) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:396) ... 81 more
Method public java.lang.String org.ofbiz.widget.screen.ScreenRenderer.render(java.lang.String) throws org.ofbiz.base.util.GeneralException,java.io.IOException,org.xml.sax.SAXException,javax.xml.parsers.ParserConfigurationException threw an exception when invoked on org.ofbiz.widget.screen.ScreenRenderer@2287c7e8 with arguments of types [java.lang.String,] The problematic instruction: ---------- ==> ${screens.render("component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#bottom-right-banner-article-detail")} [on line 12, column 17 in component://ecommerce/webapp/ecommerce/CONew2016/bestpractices/article_detail/content_Main.ftl] ---------- Java backtrace for programmers: ---------- freemarker.template.TemplateModelException: Method public java.lang.String org.ofbiz.widget.screen.ScreenRenderer.render(java.lang.String) throws org.ofbiz.base.util.GeneralException,java.io.IOException,org.xml.sax.SAXException,javax.xml.parsers.ParserConfigurationException threw an exception when invoked on org.ofbiz.widget.screen.ScreenRenderer@2287c7e8 with arguments of types [java.lang.String,] at freemarker.ext.beans.OverloadedMethodModel.exec(OverloadedMethodModel.java:134) at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:93) at freemarker.core.Expression.getAsTemplateModel(Expression.java:89) at freemarker.core.Expression.getStringValue(Expression.java:93) at freemarker.core.DollarVariable.accept(DollarVariable.java:76) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.Environment.process(Environment.java:199) at org.ofbiz.base.util.template.FreeMarkerWorker.renderTemplate(FreeMarkerWorker.java:257) at org.ofbiz.widget.screen.HtmlWidget.renderHtmlTemplate(HtmlWidget.java:225) at org.ofbiz.widget.screen.HtmlWidget$HtmlTemplate.renderWidgetString(HtmlWidget.java:270) at org.ofbiz.widget.screen.HtmlWidget.renderWidgetString(HtmlWidget.java:130) at org.ofbiz.widget.screen.ModelScreenWidget$PlatformSpecific.renderWidgetString(ModelScreenWidget.java:920) at org.ofbiz.widget.screen.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:104) at org.ofbiz.widget.screen.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:191) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:396) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:135) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:97) at sun.reflect.GeneratedMethodAccessor66.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:866) at freemarker.ext.beans.OverloadedMethodModel.exec(OverloadedMethodModel.java:104) at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:93) 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:221) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.Environment.process(Environment.java:199) at org.ofbiz.base.util.template.FreeMarkerWorker.renderTemplate(FreeMarkerWorker.java:257) at org.ofbiz.widget.screen.HtmlWidget.renderHtmlTemplate(HtmlWidget.java:225) at org.ofbiz.widget.screen.HtmlWidget$HtmlTemplate.renderWidgetString(HtmlWidget.java:270) at org.ofbiz.widget.screen.HtmlWidget.renderWidgetString(HtmlWidget.java:130) at org.ofbiz.widget.screen.ModelScreenWidget$PlatformSpecific.renderWidgetString(ModelScreenWidget.java:920) at org.ofbiz.widget.screen.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:104) at org.ofbiz.widget.screen.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:191) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:396) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:135) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:97) at org.ofbiz.widget.screen.MacroScreenViewHandler.render(MacroScreenViewHandler.java:104) at org.ofbiz.webapp.control.RequestHandler.renderView(RequestHandler.java:865) at org.ofbiz.webapp.control.RequestHandler.doRequest(RequestHandler.java:582) at org.ofbiz.webapp.control.ControlServlet.doGet(ControlServlet.java:224) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339) at com.metricstream.SEOServlet.dispatchEcommerceRequest(SEOServlet.java:287) at com.metricstream.SEOServlet.findPattern(SEOServlet.java:236) at com.metricstream.SEOServlet.doGet(SEOServlet.java:49) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.ofbiz.widget.screen.ScreenRenderException: Error rendering screen [component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#bottom-right-banner-article-detail]: org.ofbiz.entity.transaction.GenericTransactionException: The current transaction is marked for rollback, not beginning a new transaction and aborting current operation; the rollbackOnly was caused by: Error rendering screen [component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#trainings-article-detail]: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null objectjava.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object (Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object) (The current transaction is marked for rollback, not beginning a new transaction and aborting current operation; the rollbackOnly was caused by: Error rendering screen [component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#trainings-article-detail]: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null objectjava.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object (Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object)) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:423) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:135) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:97) at sun.reflect.GeneratedMethodAccessor66.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:866) at freemarker.ext.beans.OverloadedMethodModel.exec(OverloadedMethodModel.java:104) ... 74 more Caused by: org.ofbiz.entity.transaction.GenericTransactionException: The current transaction is marked for rollback, not beginning a new transaction and aborting current operation; the rollbackOnly was caused by: Error rendering screen [component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#trainings-article-detail]: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null objectjava.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object (Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object) at org.ofbiz.entity.transaction.TransactionUtil.begin(TransactionUtil.java:159) at org.ofbiz.entity.transaction.TransactionUtil.begin(TransactionUtil.java:127) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:388) ... 81 more Caused by: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object at org.ofbiz.base.util.ScriptUtil.executeScript(ScriptUtil.java:348) at org.ofbiz.base.util.ScriptUtil.executeScript(ScriptUtil.java:324) at org.ofbiz.widget.ModelWidgetAction$Script.runAction(ModelWidgetAction.java:416) at org.ofbiz.widget.ModelWidgetAction.runSubActions(ModelWidgetAction.java:116) at org.ofbiz.widget.screen.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:184) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:396) ... 81 more
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Method public java.lang.String org.ofbiz.widget.screen.ScreenRenderer.render(java.lang.String) throws org.ofbiz.base.util.GeneralException,java.io.IOException,org.xml.sax.SAXException,javax.xml.parsers.ParserConfigurationException threw an exception when invoked on org.ofbiz.widget.screen.ScreenRenderer@2287c7e8 with arguments of types [java.lang.String,] The problematic instruction: ---------- ==> ${screens.render("component://ecommerce/widget/CONew2016/BaseScreens.xml#recently-viewed")} [on line 25, column 1 in component://ecommerce/webapp/ecommerce/CONew2016/bestpractices/article_detail/content_Main.ftl] ---------- Java backtrace for programmers: ---------- freemarker.template.TemplateModelException: Method public java.lang.String org.ofbiz.widget.screen.ScreenRenderer.render(java.lang.String) throws org.ofbiz.base.util.GeneralException,java.io.IOException,org.xml.sax.SAXException,javax.xml.parsers.ParserConfigurationException threw an exception when invoked on org.ofbiz.widget.screen.ScreenRenderer@2287c7e8 with arguments of types [java.lang.String,] at freemarker.ext.beans.OverloadedMethodModel.exec(OverloadedMethodModel.java:134) at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:93) at freemarker.core.Expression.getAsTemplateModel(Expression.java:89) at freemarker.core.Expression.getStringValue(Expression.java:93) at freemarker.core.DollarVariable.accept(DollarVariable.java:76) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.Environment.process(Environment.java:199) at org.ofbiz.base.util.template.FreeMarkerWorker.renderTemplate(FreeMarkerWorker.java:257) at org.ofbiz.widget.screen.HtmlWidget.renderHtmlTemplate(HtmlWidget.java:225) at org.ofbiz.widget.screen.HtmlWidget$HtmlTemplate.renderWidgetString(HtmlWidget.java:270) at org.ofbiz.widget.screen.HtmlWidget.renderWidgetString(HtmlWidget.java:130) at org.ofbiz.widget.screen.ModelScreenWidget$PlatformSpecific.renderWidgetString(ModelScreenWidget.java:920) at org.ofbiz.widget.screen.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:104) at org.ofbiz.widget.screen.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:191) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:396) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:135) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:97) at sun.reflect.GeneratedMethodAccessor66.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:866) at freemarker.ext.beans.OverloadedMethodModel.exec(OverloadedMethodModel.java:104) at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:93) 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:221) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.Environment.process(Environment.java:199) at org.ofbiz.base.util.template.FreeMarkerWorker.renderTemplate(FreeMarkerWorker.java:257) at org.ofbiz.widget.screen.HtmlWidget.renderHtmlTemplate(HtmlWidget.java:225) at org.ofbiz.widget.screen.HtmlWidget$HtmlTemplate.renderWidgetString(HtmlWidget.java:270) at org.ofbiz.widget.screen.HtmlWidget.renderWidgetString(HtmlWidget.java:130) at org.ofbiz.widget.screen.ModelScreenWidget$PlatformSpecific.renderWidgetString(ModelScreenWidget.java:920) at org.ofbiz.widget.screen.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:104) at org.ofbiz.widget.screen.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:191) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:396) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:135) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:97) at org.ofbiz.widget.screen.MacroScreenViewHandler.render(MacroScreenViewHandler.java:104) at org.ofbiz.webapp.control.RequestHandler.renderView(RequestHandler.java:865) at org.ofbiz.webapp.control.RequestHandler.doRequest(RequestHandler.java:582) at org.ofbiz.webapp.control.ControlServlet.doGet(ControlServlet.java:224) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339) at com.metricstream.SEOServlet.dispatchEcommerceRequest(SEOServlet.java:287) at com.metricstream.SEOServlet.findPattern(SEOServlet.java:236) at com.metricstream.SEOServlet.doGet(SEOServlet.java:49) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.ofbiz.widget.screen.ScreenRenderException: Error rendering screen [component://ecommerce/widget/CONew2016/BaseScreens.xml#recently-viewed]: org.ofbiz.entity.transaction.GenericTransactionException: The current transaction is marked for rollback, not beginning a new transaction and aborting current operation; the rollbackOnly was caused by: Error rendering screen [component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#trainings-article-detail]: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null objectjava.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object (Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object) (The current transaction is marked for rollback, not beginning a new transaction and aborting current operation; the rollbackOnly was caused by: Error rendering screen [component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#trainings-article-detail]: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null objectjava.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object (Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object)) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:423) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:135) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:97) at sun.reflect.GeneratedMethodAccessor66.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:866) at freemarker.ext.beans.OverloadedMethodModel.exec(OverloadedMethodModel.java:104) ... 74 more Caused by: org.ofbiz.entity.transaction.GenericTransactionException: The current transaction is marked for rollback, not beginning a new transaction and aborting current operation; the rollbackOnly was caused by: Error rendering screen [component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#trainings-article-detail]: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null objectjava.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object (Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object) at org.ofbiz.entity.transaction.TransactionUtil.begin(TransactionUtil.java:159) at org.ofbiz.entity.transaction.TransactionUtil.begin(TransactionUtil.java:127) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:388) ... 81 more Caused by: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object at org.ofbiz.base.util.ScriptUtil.executeScript(ScriptUtil.java:348) at org.ofbiz.base.util.ScriptUtil.executeScript(ScriptUtil.java:324) at org.ofbiz.widget.ModelWidgetAction$Script.runAction(ModelWidgetAction.java:416) at org.ofbiz.widget.ModelWidgetAction.runSubActions(ModelWidgetAction.java:116) at org.ofbiz.widget.screen.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:184) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:396) ... 81 more
Method public java.lang.String org.ofbiz.widget.screen.ScreenRenderer.render(java.lang.String) throws org.ofbiz.base.util.GeneralException,java.io.IOException,org.xml.sax.SAXException,javax.xml.parsers.ParserConfigurationException threw an exception when invoked on org.ofbiz.widget.screen.ScreenRenderer@2287c7e8 with arguments of types [java.lang.String,] The problematic instruction: ---------- ==> ${screens.render("component://ecommerce/widget/CONew2016/BaseScreens.xml#main-footer")} [on line 11, column 1 in component://ecommerce/webapp/ecommerce/CONew2016/templates/articleDetail.ftl] ---------- Java backtrace for programmers: ---------- freemarker.template.TemplateModelException: Method public java.lang.String org.ofbiz.widget.screen.ScreenRenderer.render(java.lang.String) throws org.ofbiz.base.util.GeneralException,java.io.IOException,org.xml.sax.SAXException,javax.xml.parsers.ParserConfigurationException threw an exception when invoked on org.ofbiz.widget.screen.ScreenRenderer@2287c7e8 with arguments of types [java.lang.String,] at freemarker.ext.beans.OverloadedMethodModel.exec(OverloadedMethodModel.java:134) at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:93) at freemarker.core.Expression.getAsTemplateModel(Expression.java:89) at freemarker.core.Expression.getStringValue(Expression.java:93) at freemarker.core.DollarVariable.accept(DollarVariable.java:76) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.Environment.process(Environment.java:199) at org.ofbiz.base.util.template.FreeMarkerWorker.renderTemplate(FreeMarkerWorker.java:257) at org.ofbiz.widget.screen.HtmlWidget.renderHtmlTemplate(HtmlWidget.java:225) at org.ofbiz.widget.screen.HtmlWidget$HtmlTemplate.renderWidgetString(HtmlWidget.java:270) at org.ofbiz.widget.screen.HtmlWidget.renderWidgetString(HtmlWidget.java:130) at org.ofbiz.widget.screen.ModelScreenWidget$PlatformSpecific.renderWidgetString(ModelScreenWidget.java:920) at org.ofbiz.widget.screen.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:104) at org.ofbiz.widget.screen.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:191) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:396) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:135) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:97) at org.ofbiz.widget.screen.MacroScreenViewHandler.render(MacroScreenViewHandler.java:104) at org.ofbiz.webapp.control.RequestHandler.renderView(RequestHandler.java:865) at org.ofbiz.webapp.control.RequestHandler.doRequest(RequestHandler.java:582) at org.ofbiz.webapp.control.ControlServlet.doGet(ControlServlet.java:224) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339) at com.metricstream.SEOServlet.dispatchEcommerceRequest(SEOServlet.java:287) at com.metricstream.SEOServlet.findPattern(SEOServlet.java:236) at com.metricstream.SEOServlet.doGet(SEOServlet.java:49) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.ofbiz.widget.screen.ScreenRenderException: Error rendering screen [component://ecommerce/widget/CONew2016/BaseScreens.xml#main-footer]: org.ofbiz.entity.transaction.GenericTransactionException: The current transaction is marked for rollback, not beginning a new transaction and aborting current operation; the rollbackOnly was caused by: Error rendering screen [component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#trainings-article-detail]: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null objectjava.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object (Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object) (The current transaction is marked for rollback, not beginning a new transaction and aborting current operation; the rollbackOnly was caused by: Error rendering screen [component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#trainings-article-detail]: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null objectjava.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object (Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object)) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:423) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:135) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:97) at sun.reflect.GeneratedMethodAccessor66.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:866) at freemarker.ext.beans.OverloadedMethodModel.exec(OverloadedMethodModel.java:104) ... 51 more Caused by: org.ofbiz.entity.transaction.GenericTransactionException: The current transaction is marked for rollback, not beginning a new transaction and aborting current operation; the rollbackOnly was caused by: Error rendering screen [component://ecommerce/widget/CONew2016/BestPracticesPageScreens.xml#trainings-article-detail]: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null objectjava.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object (Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object) at org.ofbiz.entity.transaction.TransactionUtil.begin(TransactionUtil.java:159) at org.ofbiz.entity.transaction.TransactionUtil.begin(TransactionUtil.java:127) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:388) ... 58 more Caused by: java.lang.IllegalArgumentException: Error running script at location [component://ecommerce/webapp/ecommerce/WEB-INF/actions/CONew2016/bestpractices/article_detail/trainings_articleDetail.groovy]: javax.script.ScriptException: java.lang.NullPointerException: Cannot invoke method getString() on null object at org.ofbiz.base.util.ScriptUtil.executeScript(ScriptUtil.java:348) at org.ofbiz.base.util.ScriptUtil.executeScript(ScriptUtil.java:324) at org.ofbiz.widget.ModelWidgetAction$Script.runAction(ModelWidgetAction.java:416) at org.ofbiz.widget.ModelWidgetAction.runSubActions(ModelWidgetAction.java:116) at org.ofbiz.widget.screen.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:184) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:396) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:135) at org.ofbiz.widget.screen.ScreenRenderer.render(ScreenRenderer.java:97) at sun.reflect.GeneratedMethodAccessor66.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at freemarker.ext.beans.BeansWrapper.invokeMethod(BeansWrapper.java:866) at freemarker.ext.beans.OverloadedMethodModel.exec(OverloadedMethodModel.java:104) at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:93) at freemarker.core.Expression.getAsTemplateModel(Expression.java:89) at freemarker.core.Expression.getStringValue(Expression.java:93) at freemarker.core.DollarVariable.accept(DollarVariable.java:76) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:221) at freemarker.core.Environment.process(Environment.java:199) at org.ofbiz.base.util.template.FreeMarkerWorker.renderTemplate(FreeMarkerWorker.java:257) at org.ofbiz.widget.screen.HtmlWidget.renderHtmlTemplate(HtmlWidget.java:225) at org.ofbiz.widget.screen.HtmlWidget$HtmlTemplate.renderWidgetString(HtmlWidget.java:270) at org.ofbiz.widget.screen.HtmlWidget.renderWidgetString(HtmlWidget.java:130) at org.ofbiz.widget.screen.ModelScreenWidget$PlatformSpecific.renderWidgetString(ModelScreenWidget.java:920) at org.ofbiz.widget.screen.ModelScreenWidget.renderSubWidgetsString(ModelScreenWidget.java:104) at org.ofbiz.widget.screen.ModelScreenWidget$Section.renderWidgetString(ModelScreenWidget.java:191) at org.ofbiz.widget.screen.ModelScreen.renderScreenString(ModelScreen.java:396) ... 58 more