These errors may sometimes appear in the log. In this kind of cases:
2010-06-22 10:53:44,902 WARN - jsp.taglib.util.PageContextBacking - PageContext
org.apache.jasper.runtime.JspContextWrapper@30044a7c has no request.
java.lang.Exception
at org.mmbase.bridge.jsp.taglib.util.PageContextBacking.getOriginal(PageContextBacking.java:178)
at org.mmbase.bridge.jsp.taglib.util.ContextContainer.simpleGet(ContextContainer.java:292)
at org.mmbase.bridge.jsp.taglib.util.StandaloneContextContainer.simpleGet(StandaloneContextContainer.java:85)
at org.mmbase.bridge.jsp.taglib.util.ContextContainer.get(ContextContainer.java:302)
at org.mmbase.bridge.jsp.taglib.util.ContextContainer.get(ContextContainer.java:312)
at javax.el.MapELResolver.getValue(MapELResolver.java:51)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
at org.apache.el.parser.AstValue.getValue(AstValue.java:114)
at org.apache.el.parser.AstEmpty.getValue(AstEmpty.java:45)
at org.apache.el.parser.AstNot.getValue(AstNot.java:42)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:923)
at org.apache.jsp.mmbase.searchrelate.list.create_jspx._jspx_meth_c_005fif_005f2(create_jspx.java:1137)
at org.apache.jsp.mmbase.searchrelate.list.create_jspx._jspx_meth_mm_005fcreatenode_005f1(create_jspx.java:1101)
at org.apache.jsp.mmbase.searchrelate.list.create_jspx._jspService(create_jspx.java:283)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at nl.eo.patmos.PatmosUrlFilter.doFilter(PatmosUrlFilter.java:335)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.mmbase.framework.FrameworkFilter.doFilter(FrameworkFilter.java:253)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
at java.lang.Thread.run(Thread.java:619)
AND
2010-06-22 08:54:31,683 WARN - jsp.taglib.util.PageContextBacking - PageContext
org.apache.jasper.runtime.PageContextImpl@2df5cc18 has no request.
java.lang.Exception
at org.mmbase.bridge.jsp.taglib.util.PageContextBacking.getOriginal(PageContextBacking.java:178)
at org.mmbase.bridge.jsp.taglib.util.ContextContainer.simpleGet(ContextContainer.java:292)
at org.mmbase.bridge.jsp.taglib.util.StandaloneContextContainer.simpleGet(StandaloneContextContainer.java:85)
at org.mmbase.bridge.jsp.taglib.util.StandaloneContextContainer.simpleGet(StandaloneContextContainer.java:85)
at org.mmbase.bridge.jsp.taglib.util.ContextContainer.get(ContextContainer.java:302)
at org.mmbase.bridge.jsp.taglib.util.ContextContainer.get(ContextContainer.java:312)
at nl.eo.reservations.functions.ReservationsFunctions.insertUisOrder(ReservationsFunctions.java:474)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.mmbase.util.functions.SetFunction.getFunctionValue(SetFunction.java:215)
at org.mmbase.bridge.jsp.taglib.functions.AbstractFunctionTag.getFunctionValue(AbstractFunctionTag.java:349)
at org.mmbase.bridge.jsp.taglib.functions.AbstractFunctionTag.getFunctionValue(AbstractFunctionTag.java:290)
at org.mmbase.bridge.jsp.taglib.functions.BooleanFunctionTag.doStartTag(BooleanFunctionTag.java:41)
at org.apache.jsp.components.reservations.secure.commit_jsp._jspx_meth_mm_005fbooleanfunction_005f1(commit_jsp.java:802)
at org.apache.jsp.components.reservations.secure.commit_jsp._jspx_meth_mm_005fcompare_005f1(commit_jsp.java:728)
at org.apache.jsp.components.reservations.secure.commit_jsp._jspx_meth_mm_005ffield_005f0(commit_jsp.java:552)
at org.apache.jsp.components.reservations.secure.commit_jsp._jspx_meth_c_005fwhen_005f0(commit_jsp.java:509)
at org.apache.jsp.components.reservations.secure.commit_jsp._jspx_meth_c_005fchoose_005f0(commit_jsp.java:476)
at org.apache.jsp.components.reservations.secure.commit_jsp._jspx_meth_mm_005fnode_005f0(commit_jsp.java:374)
at org.apache.jsp.components.reservations.secure.commit_jsp._jspx_meth_mm_005fcontext_005f0(commit_jsp.java:322)
at org.apache.jsp.components.reservations.secure.commit_jsp._jspx_meth_mm_005fcontent_005f0(commit_jsp.java:148)
at org.apache.jsp.components.reservations.secure.commit_jsp._jspx_meth_mm_005fcloud_005f0(commit_jsp.java:92)
at org.apache.jsp.components.reservations.secure.commit_jsp._jspService(commit_jsp.java:58)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
at nl.eo.patmos.PatmosUrlFilter.handleRequest(PatmosUrlFilter.java:277)
at nl.eo.patmos.PatmosUrlFilter.doFilter(PatmosUrlFilter.java:406)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
at java.lang.Thread.run(Thread.java:619)