Struts Error NOSUCHMETHODERROR:COM.OPENSYMPHONY.XWORK2

Severity: Exception Starting filter Struts2
JAVA.LANG.NOSUCHMETHODERROR:COM.OPENSYMPHONY.XWORK2.UTIL.FINDER.URLSET.INCLUDECLASSESURL (lcom/opensymphony/ Xwork2/util/finder/classloaderinterface;) Lcom/opensymphony/xwork2/util/finder/urlset;
At Org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildUrlSet ( packagebasedactionconfigbuilder.java:417)
At Org.apache.struts2.convention.PackageBasedActionConfigBuilder.findActions ( packagebasedactionconfigbuilder.java:376)
At Org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildActionConfigs ( packagebasedactionconfigbuilder.java:334)
At Org.apache.struts2.convention.ClasspathPackageProvider.loadPackages (classpathpackageprovider.java:53)
At Com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer (defaultconfiguration.java:260)
At Com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration (configurationmanager.java:67)
At Org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration (dispatcher.java:429)
At Org.apache.struts2.dispatcher.Dispatcher.init (dispatcher.java:473)
At Org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher (initoperations.java:74)
At Org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init ( STRUTSPREPAREANDEXECUTEFILTER.JAVA:51)
At Org.apache.catalina.core.ApplicationFilterConfig.initFilter (applicationfilterconfig.java:273)
At Org.apache.catalina.core.ApplicationFilterConfig.getFilter (applicationfilterconfig.java:254)
At Org.apache.catalina.core.ApplicationFilterConfig.setFilterDef (applicationfilterconfig.java:372)
At Org.apache.catalina.core.applicationfilterconfig.<init> (applicationfilterconfig.java:98)
At Org.apache.catalina.core.StandardContext.filterStart (standardcontext.java:4562)
At Org.apache.catalina.core.standardcontext$2.call (standardcontext.java:5240)
At Org.apache.catalina.core.standardcontext$2.call (standardcontext.java:5235)
At Java.util.concurrent.futuretask$sync.innerrun (Unknown Source)
At Java.util.concurrent.FutureTask.run (Unknown Source)
At Java.util.concurrent.threadpoolexecutor$worker.runtask (Unknown Source)
At Java.util.concurrent.threadpoolexecutor$worker.run (Unknown Source)
At Java.lang.Thread.run (Unknown Source)
2013-8-1 16:22:34 Org.apache.catalina.core.StandardContext startinternal

Workaround:

I'm using the jar package: Struts2-core-2.3.12.jar + Struts2-convention-plugin-2.2.16.jar + Xwork-core-2.3.12.jar. The solution is to change the Struts2-convention-plugin-2.2.16.jar to Struts2-convention-plugin-2.3.12.jar. Version number is consistent with Struts-core, Xwork-core version number

Struts Error NOSUCHMETHODERROR:COM.OPENSYMPHONY.XWORK2