we are encountered such problem this morning, the stack trace is as below: Unable to load configuration. - interceptor - jar:file:/base/data/home/ apps/payelex/test6.353140888165137778/WEB-INF/lib/struts2- core-2.1.8.1.jar!/struts-default.xml:149:127 at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:431) at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java: 190) at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java: 97) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 50) at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java: 662) at org.mortbay.jetty.servlet.Context.startContext(Context.java:140) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java: 1250) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java: 517) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java: 467) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java: 50) at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java: 202) at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java: 171) at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java: 123) at com.google.apphosting.runtime.JavaRuntime $RequestRunnable.run(JavaRuntime.java:391) at com.google.apphosting.runtime.ThreadGroupPool $PoolEntry.run(ThreadGroupPool.java:160) at java.lang.Thread.run(Thread.java:679) Caused by: Unable to load configuration. - interceptor - jar:file:/ base/data/home/apps/payelex/test6.353140888165137778/WEB-INF/lib/ struts2-core-2.1.8.1.jar!/struts-default.xml:149:127 at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java: 58) at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java: 374) at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418) ... 15 more Caused by: Caught Exception while registering Interceptor class org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor - interceptor - jar:file:/base/data/home/apps/payelex/ test6.353140888165137778/WEB-INF/lib/struts2-core-2.1.8.1.jar!/struts- default.xml:149:127 at org.apache.struts2.impl.StrutsObjectFactory.buildInterceptor(StrutsObjectFactory.java: 77) at com.opensymphony.xwork2.config.providers.InterceptorBuilder.constructParameterizedInterceptorReferences(InterceptorBuilder.java: 170) at com.opensymphony.xwork2.config.providers.InterceptorBuilder.constructInterceptorReference(InterceptorBuilder.java: 72) at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.lookupInterceptorReference(XmlConfigurationProvider.java: 987) at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.buildInterceptorList(XmlConfigurationProvider.java: 539) at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java: 370) at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java: 468) at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java: 264) at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java: 111) at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java: 193) at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java: 55) ... 17 more Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at com.opensymphony.xwork2.inject.ContainerImpl $MethodInjector.inject(ContainerImpl.java:295) at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java: 485) at com.opensymphony.xwork2.inject.ContainerImpl $6.call(ContainerImpl.java:523) at com.opensymphony.xwork2.inject.ContainerImpl $6.call(ContainerImpl.java:521) at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java: 574) at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java: 521) at com.opensymphony.xwork2.ObjectFactory.injectInternalBeans(ObjectFactory.java: 127) at com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java: 152) at com.opensymphony.xwork2.ObjectFactory.buildBean(ObjectFactory.java: 139) at org.apache.struts2.impl.StrutsObjectFactory.buildInterceptor(StrutsObjectFactory.java: 52) ... 27 more Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at com.opensymphony.xwork2.inject.ContainerBuilder $4.create(ContainerBuilder.java:132) at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51) at com.opensymphony.xwork2.inject.ContainerImpl $ParameterInjector.inject(ContainerImpl.java:462) at com.opensymphony.xwork2.inject.ContainerImpl.getParameters(ContainerImpl.java: 477) at com.opensymphony.xwork2.inject.ContainerImpl.access $000(ContainerImpl.java:34) at com.opensymphony.xwork2.inject.ContainerImpl $MethodInjector.inject(ContainerImpl.java:293) ... 36 more Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java: 495) at com.opensymphony.xwork2.inject.ContainerImpl $7.call(ContainerImpl.java:532) at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java: 581) at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java: 530) at com.opensymphony.xwork2.config.impl.LocatableFactory.create(LocatableFactory.java: 32) at com.opensymphony.xwork2.inject.ContainerBuilder $4.create(ContainerBuilder.java:130) ... 41 more Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at com.opensymphony.xwork2.inject.ContainerImpl $MethodInjector.inject(ContainerImpl.java:295) at com.opensymphony.xwork2.inject.ContainerImpl $ConstructorInjector.construct(ContainerImpl.java:431) at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java: 492) ... 46 more Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at com.opensymphony.xwork2.inject.ContainerBuilder $4.create(ContainerBuilder.java:132) at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51) at com.opensymphony.xwork2.inject.ContainerImpl $ParameterInjector.inject(ContainerImpl.java:462) at com.opensymphony.xwork2.inject.ContainerImpl.getParameters(ContainerImpl.java: 477) at com.opensymphony.xwork2.inject.ContainerImpl.access $000(ContainerImpl.java:34) at com.opensymphony.xwork2.inject.ContainerImpl $MethodInjector.inject(ContainerImpl.java:293) ... 48 more Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java: 495) at com.opensymphony.xwork2.inject.ContainerImpl $7.call(ContainerImpl.java:532) at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java: 581) at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java: 530) at com.opensymphony.xwork2.config.impl.LocatableFactory.create(LocatableFactory.java: 32) at com.opensymphony.xwork2.inject.ContainerBuilder $4.create(ContainerBuilder.java:130) ... 53 more Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
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