Exception starting filter struts2 Não é possível carregar a configuração. – feijão

Oi eu sou novo no Struts e tentando olá mundo no struts mas eu tenho erro. Eu estou tentando consertar isso, mas incapaz de fazer. A mensagem de erro é

EVERE: Exception starting filter struts2 Unable to load configuration. - bean - jar:file:/home/sudarshan/Desktop/RestFullTuts/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/struts2starter/WEB-INF/lib/struts2-portlet-plugin-2.3.28.jar!/struts-plugin.xml:31:133 at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:496) at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:57) at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260) at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:105) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4574) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5193) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: Unable to load configuration. - bean - jar:file:/home/sudarshan/Desktop/RestFullTuts/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/struts2starter/WEB-INF/lib/struts2-portlet-plugin-2.3.28.jar!/struts-plugin.xml:31:133 at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:70) at org.apache.struts2.dispatcher.Dispatcher.getContainer(Dispatcher.java:970) at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:438) at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:482) ... 14 more 

Meu arquivo struts.xml é

     success.jsp error.jsp    

Web.xml é

   struts2starter  index.html index.htm index.jsp default.html default.htm default.jsp   struts2 org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter    struts2 /*   

Então, qual é a solução para este código.