升级的过程中都按照网上说的做了，但是最后报了这个错很蒙，请各位帮忙解答下，万分感谢
严重: Exception starting filter struts2
java.lang.reflect.InvocationTargetException - Class: com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector
File: ContainerImpl.java
Method: construct
Line: 425 - com/opensymphony/xwork2/inject/ContainerImpl.java:425:-1
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:502)
at org.apache.struts2.dispatcher.InitOperations.initDispatcher(InitOperations.java:73)
at org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:61)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4574)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5193)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

2.5.30的strust2.core好像已经集成了xwork,把xwork低版本的包删掉试试,不太懂