Web Script Status 500 - Internal Error

[dinuka]

the below error shown in the "mywebform"

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The Web Script /alfresco/wcs/ui/mywebforms has responded with a status of 500 - Internal Error.

500 Description:   An error inside the HTTP server which prevented it from fulfilling the request.

Message:   Error during processing of the template 'Expression wp.childAssocs["wca:webuser"] is undefined on line 24, column 14 in org/alfresco/portlets/mywebforms.get.html.ftl.'. Please contact your system administrator.

Exception:   freemarker.core.InvalidReferenceException - Expression wp.childAssocs["wca:webuser"] is undefined on line 24, column 14 in org/alfresco/portlets/mywebforms.get.html.ftl.
   
   freemarker.core.TemplateObject.assertNonNull(TemplateObject.java:124)
   freemarker.core.IteratorBlock.accept(IteratorBlock.java:93)
   freemarker.core.Environment.visit(Environment.java:196)
   freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:172)
   freemarker.core.Environment.visit(Environment.java:351)
   freemarker.core.IteratorBlock.accept(IteratorBlock.java:95)
   freemarker.core.Environment.visit(Environment.java:196)
   freemarker.core.MixedContent.accept(MixedContent.java:92)
   freemarker.core.Environment.visit(Environment.java:196)
   freemarker.core.Environment.process(Environment.java:176)
   freemarker.template.Template.process(Template.java:232)
   org.alfresco.repo.template.FreeMarkerProcessor.process(FreeMarkerProcessor.java:200)
   org.alfresco.web.scripts.AbstractWebScript.renderTemplate(AbstractWebScript.java:329)
   org.alfresco.web.scripts.DeclarativeWebScript.renderFormatTemplate(DeclarativeWebScript.java:232)
   org.alfresco.web.scripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:158)
   org.alfresco.web.scripts.WebScriptRuntime.wrappedExecute(WebScriptRuntime.java:342)
   org.alfresco.web.scripts.WebScriptRuntime.authenticatedExecute(WebScriptRuntime.java:308)
   org.alfresco.web.scripts.WebScriptRuntime$1.execute(WebScriptRuntime.java:163)
   org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:225)
   org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:155)
   org.alfresco.web.scripts.WebScriptRuntime.executeScript(WebScriptRuntime.java:174)
   org.alfresco.web.scripts.jsf.UIWebScript.encodeBegin(UIWebScript.java:199)
   org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:412)
   org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:400)
   org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:417)
   org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:400)
   org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:417)
   org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:229)
   org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:101)
   javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
   javax.faces.webapp.UIComponentTag.encodeEnd(UIComponentTag.java:498)
   javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:366)
   org.apache.myfaces.shared_impl.taglib.UIComponentBodyTagBase.doEndTag(UIComponentBodyTagBase.java:57)
   org.apache.jsp.jsp.dashboards.layouts.single_002dcolumn_jsp._jspService(single_002dcolumn_jsp.java:322)
   org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328)
   org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:315)
   org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
   org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:691)
   org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:594)
   org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:505)
   org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:965)
   org.apache.jsp.jsp.dashboards.container_jsp._jspService(container_jsp.java:485)
   org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328)
   org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:315)
   org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
   org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:691)
   org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:469)
   org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:403)
   org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
   org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:419)
   org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:211)
   org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
   org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
   javax.faces.webapp.FacesServlet.service(FacesServlet.java:140)
   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
   org.alfresco.web.app.servlet.AuthenticationFilter.doFilter(AuthenticationFilter.java:94)
   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
   org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
   org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
   org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
   org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
   org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
   org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
   org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
   org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
   org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
   org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
   java.lang.Thread.run(Thread.java:619)
   
Exception:   org.alfresco.service.cmr.repository.TemplateException - Error during processing of the template 'Expression wp.childAssocs["wca:webuser"] is undefined on line 24, column 14 in org/alfresco/portlets/mywebforms.get.html.ftl.'. Please contact your system administrator..
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please help me solve this problem

[dooley]

Are you using a custom content model for the web script your calling?  There error can mean 2 things, either your model may be wrong or your probably not calling the childAssocs method properly.

I glanced over Alfresco's javascript api and I believe your not calling the method properly.  The childAssocs method returns an array of nodes associations.  So you may have to create a loop to extract each association, or if you know the index of the association you want you can call it like this:

wp.childAssocs["wca:webuser"][0]
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