Struts Problem Report

Stacktraces

There is no Action mapped for namespace [/] and action name [displayPdf1] associated with context path []. - [unknown location]
    com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185)
    org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:63)
    org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:37)
    com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)
    org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:565)
    org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)
    org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
    com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:89)
    com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:156)
    com.caucho.server.webapp.AccessLogFilterChain.doFilter(AccessLogFilterChain.java:95)
    com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:314)
    com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:843)
    com.caucho.network.listen.TcpSocketLink.dispatchRequest(TcpSocketLink.java:1395)
    com.caucho.network.listen.TcpSocketLink.handleRequest(TcpSocketLink.java:1351)
    com.caucho.network.listen.TcpSocketLink.handleRequestsImpl(TcpSocketLink.java:1335)
    com.caucho.network.listen.TcpSocketLink.handleRequests(TcpSocketLink.java:1243)
    com.caucho.network.listen.TcpSocketLink.handleAcceptTaskImpl(TcpSocketLink.java:1037)
    com.caucho.network.listen.ConnectionTask.runThread(ConnectionTask.java:117)
    com.caucho.network.listen.ConnectionTask.run(ConnectionTask.java:93)
    com.caucho.network.listen.SocketLinkThreadLauncher.handleTasks(SocketLinkThreadLauncher.java:175)
    com.caucho.network.listen.TcpSocketAcceptThread.run(TcpSocketAcceptThread.java:61)
    com.caucho.env.thread2.ResinThread2.runTasks(ResinThread2.java:173)
    com.caucho.env.thread2.ResinThread2.run(ResinThread2.java:118)