title: Issue in Struts Application
body: <p>I'm working on a struts application for the first time and getting this error while try to run this. It's getting build successfully.</p>
  <p>How to resolve this error?</p>
  <pre><code>com.opensymphony.xwork2.config.ConfigurationException: Unable to load configuration.
  
              at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:69)
  
              at org.apache.struts2.dispatcher.Dispatcher.getContainer(Dispatcher.java:959)
  
              at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:463)
  
              at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:496)
  
              at org.apache.struts2.dispatcher.InitOperations.initDispatcher(InitOperations.java:73)
  
              at org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:61)
  
              at weblogic.servlet.internal.FilterManager$FilterInitAction.run(FilterManager.java:400)
  
              at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:326)
  
              at weblogic.security.service.SecurityManager.runAsForUserCode(SecurityManager.java:196)
  
              at weblogic.servlet.provider.WlsSecurityProvider.runAsForUserCode(WlsSecurityProvider.java:203)
  
              at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:71)
  
              at weblogic.servlet.internal.FilterManager.initFilter(FilterManager.java:130)
  
              at weblogic.servlet.internal.FilterManager.loadFilter(FilterManager.java:92)
  
              at weblogic.servlet.internal.FilterManager.preloadFilters(FilterManager.java:72)
  
              at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1917)
  
              at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:3063)
  
              at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1830)
  
              at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:875)
  
              at weblogic.application.internal.ExtensibleModuleWrapper$StartStateChange.next(ExtensibleModuleWrapper.java:360)
  
              at weblogic.application.internal.ExtensibleModuleWrapper$StartStateChange.next(ExtensibleModuleWrapper.java:356)
  
              at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
  
              at weblogic.application.internal.ExtensibleModuleWrapper.start(ExtensibleModuleWrapper.java:138)
  
              at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:124)
  
              at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:237)
  
              at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:232)
  
              at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
  
              at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:82)
  
              at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:52)
  
              at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:753)
  
              at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
  
              at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:263)
  
              at weblogic.application.internal.EarDeployment.activate(EarDeployment.java:67)
  
              at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:165)
  
              at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:80)
  
              at weblogic.deploy.internal.targetserver.operations.AbstractOperation.activate(AbstractOperation.java:601)
  
              at weblogic.deploy.internal.targetserver.operations.ActivateOperation.activateDeployment(ActivateOperation.java:171)
  
              at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doCommit(ActivateOperation.java:121)
  
              at weblogic.deploy.internal.targetserver.operations.StartOperation.doCommit(StartOperation.java:151)
  
              at weblogic.deploy.internal.targetserver.operations.AbstractOperation.commit(AbstractOperation.java:343)
  
              at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentCommit(DeploymentManager.java:895)
  
              at weblogic.deploy.internal.targetserver.DeploymentManager.activateDeploymentList(DeploymentManager.java:1422)
  
              at weblogic.deploy.internal.targetserver.DeploymentManager.handleCommit(DeploymentManager.java:454)
  
              at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.commit(DeploymentServiceDispatcher.java:181)
  
              at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doCommitCallback(DeploymentReceiverCallbackDeliverer.java:195)
  
              at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiverCallbackDeliverer.java:13)
  
              at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$2.run(DeploymentReceiverCallbackDeliverer.java:68)
  
              at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:643)
  
              at weblogic.invocation.ComponentInvocationContextManager._runAs(ComponentInvocationContextManager.java:348)
  
              at weblogic.invocation.ComponentInvocationContextManager.runAs(ComponentInvocationContextManager.java:333)
  
              at weblogic.work.LivePartitionUtility.doRunWorkUnderContext(LivePartitionUtility.java:54)
  
              at weblogic.work.PartitionUtility.runWorkUnderContext(PartitionUtility.java:41)
  
              at weblogic.work.SelfTuningWorkManagerImpl.runWorkUnderContext(SelfTuningWorkManagerImpl.java:617)
  
              at weblogic.work.ExecuteThread.execute(ExecuteThread.java:397)
  
              at weblogic.work.ExecuteThread.run(ExecuteThread.java:346)
  
  Caused by: com.opensymphony.xwork2.config.ConfigurationException: Parent package is not defined: fw-default
  
              at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.buildPackageContext(XmlConfigurationProvider.java:689)
  
              at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:539)
  
              at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:326)
  
              at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:108)
  
              at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:196)
  
              at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66)
  
              ... 53 common frames omitted
  </code></pre>