java.lang.Exception: Stack trace
        at java.lang.Thread.dumpStack(Thread.java:1158)
        at org.apache.coyote.tomcat5.CoyoteResponse.addHeader(CoyoteResponse.java:1086)
        at org.apache.coyote.tomcat5.CoyoteResponseFacade.addHeader(CoyoteResponseFacade.java:478)
        at org.apache.jsp.index_jsp._jspService(Unknown Source)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:358)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:441)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:336)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:397)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:276)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:586)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:556)
        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:246)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:185)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:586)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:73)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:182)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:586)
        at com.sun.enterprise.web.VirtualServerPipeline.invoke(VirtualServerPipeline.java:120)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:137)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:586)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:556)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:239)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:618)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.processNonBlocked(DefaultProcessorTask.java:549)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:789)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:328)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:251)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:205)
        at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:252)
        at com.sun.enterprise.web.connector.grizzly.WorkerThreadImpl.run(WorkerThreadImpl.java:103)