struts项目在tomcat打开中报错，（项目没有报错）求解？

Unable to load configuration. - interceptor-ref - file:/D:/apache-tomcat-7.0.69-windows-x64/apache-tomcat-7.0.69/webapps/Struts/WEB-INF/classes/struts.xml:16:42

at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:69)

at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:371)

at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:415)

at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69)

at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)

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:4908)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5602)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)

at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)

at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)

at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)

at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1260)

at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:2002)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

at java.util.concurrent.FutureTask.run(FutureTask.java:262)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at java.lang.Thread.run(Thread.java:745)

Caused by: Unable to find interceptor class referenced by ref-name defaultStatsk - interceptor-ref - file:/D:/apache-tomcat-7.0.69-windows-x64/apache-tomcat-7.0.69/webapps/Struts/WEB-INF/classes/struts.xml:16:42

at com.opensymphony.xwork2.config.providers.InterceptorBuilder.constructInterceptorReference(InterceptorBuilder.java:63)

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.lookupInterceptorReference(XmlConfigurationProvider.java:998)

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadInterceptorStack(XmlConfigurationProvider.java:817)

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadInterceptorStacks(XmlConfigurationProvider.java:830)

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadInterceptors(XmlConfigurationProvider.java:853)

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:460)

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:275)

at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:111)

at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:204)

at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66)

... 20 more

三月 08, 2017 12:46:22 下午 org.apache.catalina.core.StandardContext filterStart

严重: Exception starting filter struts2

Unable to load configuration. - interceptor-ref - file:/D:/apache-tomcat-7.0.69-windows-x64/apache-tomcat-7.0.69/webapps/Struts/WEB-INF/classes/struts.xml:16:42

at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:428)