Method public java.lang.String com.sft.components.portlet.AbstractPortletUI.getAjaxParamContent(com.sft.entity.web.config.PortletBlock) threw an exception when invoked on com.sft.components.portlet.PortletUI@9cb11b
The problematic instruction:
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==> ${tag.getAjaxParamContent(block)} [on line 77, column 46 in template/portlet/block.ftl]
 in include "/${parameters.templateDir}/portlet/block.ftl" [on line 4, column 1 in template/simple/template-close.ftl]
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Java backtrace for programmers:
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freemarker.template.TemplateModelException: Method public java.lang.String com.sft.components.portlet.AbstractPortletUI.getAjaxParamContent(com.sft.entity.web.config.PortletBlock) threw an exception when invoked on com.sft.components.portlet.PortletUI@9cb11b
	at freemarker.ext.beans.SimpleMethodModel.exec(SimpleMethodModel.java:136)
	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:196)
	at freemarker.core.MixedContent.accept(MixedContent.java:92)
	at freemarker.core.Environment.visit(Environment.java:196)
	at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:79)
	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.include(Environment.java:1375)
	at freemarker.core.Include.accept(Include.java:155)
	at freemarker.core.Environment.visit(Environment.java:196)
	at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:160)
	at freemarker.core.Environment.visit(Environment.java:351)
	at freemarker.core.IteratorBlock.accept(IteratorBlock.java:95)
	at freemarker.core.Environment.visit(Environment.java:196)
	at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:79)
	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 org.apache.struts2.components.template.FreemarkerTemplateEngine.renderTemplate(FreemarkerTemplateEngine.java:148)
	at org.apache.struts2.components.UIBean.mergeTemplate(UIBean.java:530)
	at org.apache.struts2.components.UIBean.end(UIBean.java:484)
	at com.sft.components.portlet.PortletUI.end(Unknown Source)
	at org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:43)
	at _jsp._demsy._portlet._template._main__jsp._jspService(_main__jsp.java:170)
	at com.caucho.jsp.JavaPage.service(JavaPage.java:61)
	at com.caucho.jsp.Page.pageservice(Page.java:587)
	at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:192)
	at com.caucho.server.webapp.DispatchFilterChain.doFilter(DispatchFilterChain.java:97)
	at com.caucho.server.cache.CacheFilterChain.doFilter(CacheFilterChain.java:121)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:241)
	at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:491)
	at com.caucho.server.webapp.RequestDispatcherImpl.include(RequestDispatcherImpl.java:355)
	at com.opensymphony.module.sitemesh.filter.PageFilter.applyDecorator(PageFilter.java:156)
	at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:59)
	at demsy.filter.DemsyPageFilter.doFilter(Unknown Source)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:76)
	at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
	at demsy.filter.DemsyActionContextCleanUp.doFilter(Unknown Source)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:76)
	at com.sft.filter.CharsetFilter.doFilter(Unknown Source)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:76)
	at com.sft.util.SFTServletContextListener.doFilter(Unknown Source)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:76)
	at demsy.filter.DemsySessionFilter.doFilterInternal(Unknown Source)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:76)
	at com.caucho.server.webapp.DispatchFilterChain.doFilter(DispatchFilterChain.java:97)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:241)
	at com.caucho.server.webapp.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:280)
	at com.caucho.server.webapp.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:108)
	at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:195)
	at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:159)
	at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:141)
	at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:90)
	at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:417)
	at demsy.filter.DemsyUrlRewriteFilter.doFilter(Unknown Source)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:76)
	at com.caucho.server.cache.CacheFilterChain.doFilter(CacheFilterChain.java:158)
	at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:178)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:241)
	at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:268)
	at com.caucho.server.port.TcpConnection.run(TcpConnection.java:586)
	at com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:690)
	at com.caucho.util.ThreadPool$Item.run(ThreadPool.java:612)
	at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
	at com.sft.components.portlet.AbstractPortletUI.getAjaxParamContent(Unknown Source)
	at sun.reflect.GeneratedMethodAccessor216.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at freemarker.ext.beans.BeansWrapper.invokeMethod(BeansWrapper.java:616)
	at freemarker.ext.beans.SimpleMethodModel.exec(SimpleMethodModel.java:113)
	... 71 more