Struts Problem Report

Stacktraces

There is no Action mapped for namespace / and action name flight. - [unknown location]
    com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:189)
    org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:61)
    org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:39)
    com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)
    org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:475)
    org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
    com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
    com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
    com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:187)
    com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:265)
    com.caucho.server.hmux.HmuxRequest.handleRequest(HmuxRequest.java:436)
    com.caucho.server.port.TcpConnection.run(TcpConnection.java:682)
    com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:743)
    com.caucho.util.ThreadPool$Item.run(ThreadPool.java:662)
    java.lang.Thread.run(Thread.java:662)