Struts Problem Report

Stacktraces

There is no Action mapped for namespace [/] and action name [article] associated with context path []. - [unknown location]
    org.apache.struts2.DefaultActionProxy.prepare(DefaultActionProxy.java:186)
    org.apache.struts2.factory.StrutsActionProxy.prepare(StrutsActionProxy.java:60)
    org.apache.struts2.factory.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:32)
    org.apache.struts2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:61)
    org.apache.struts2.dispatcher.Dispatcher.createActionProxy(Dispatcher.java:763)
    org.apache.struts2.dispatcher.Dispatcher.prepareActionProxy(Dispatcher.java:749)
    org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:712)
    org.apache.struts2.dispatcher.ExecuteOperations.executeAction(ExecuteOperations.java:79)
    org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.handleRequest(StrutsPrepareAndExecuteFilter.java:154)
    org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.tryHandleRequest(StrutsPrepareAndExecuteFilter.java:137)
    org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:125)
    org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:109)
    org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167)
    org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:79)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:483)
    org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:116)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:666)
    org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:719)
    org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:396)
    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:903)
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1780)
    org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
    org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:948)
    org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:482)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:57)
    java.base/java.lang.Thread.run(Thread.java:1474)