Migrated to EAP6: Now receiving NoClassDefFoundError: org/jboss/web/tomcat/security/login/WebAuthentication in the server.log

Issue

• The following error is seen in server.log:

  ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC000001: Failed to start service jboss.deployment.subunit."GenericAppEAR.ear"."GenericApp.war".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.subunit."GenericAppEAR.ear"."GenericApp.war".POST_MODULE: Failed to process phase POST_MODULE of subdeployment "GenericApp.war" of deployment "GenericAppEAR.ear"
      at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:119) [jboss-as-server-7.1.0.Final-redhat-1.jar:7.1.0.Final-redhat-1]
      at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA-redhat-1.jar:1.0.2.GA-redhat-1]
      at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA-redhat-1.jar:1.0.2.GA-redhat-1]
      at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) [rt.jar:1.6.0_29]
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [rt.jar:1.6.0_29]
      at java.lang.Thread.run(Unknown Source) [rt.jar:1.6.0_29]
  Caused by: java.lang.RuntimeException: Error getting reflective information for class com.customer.package.Class with ClassLoader ModuleClassLoader for Module "deployment.GenericAppEAR.ear:main" from Service Module Loader
      at org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex.getClassIndex(DeploymentReflectionIndex.java:70) [jboss-as-server-7.1.0.Final-redhat-1.jar:7.1.0.Final-redhat-1]
      at org.jboss.as.ee.metadata.MethodAnnotationAggregator.runtimeAnnotationInformation(MethodAnnotationAggregator.java:58)
      at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.handleAnnotations(InterceptorAnnotationProcessor.java:70)
      at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.processComponentConfig(InterceptorAnnotationProcessor.java:117)
      at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.deploy(InterceptorAnnotationProcessor.java:54)
      at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:113) [jboss-as-server-7.1.0.Final-redhat-1.jar:7.1.0.Final-redhat-1]
      ... 5 more
  Caused by: java.lang.NoClassDefFoundError: org/jboss/web/tomcat/security/login/WebAuthentication
      at java.lang.Class.getDeclaredMethods0(Native Method) [rt.jar:1.6.0_29]
      at java.lang.Class.privateGetDeclaredMethods(Unknown Source) [rt.jar:1.6.0_29]
      at java.lang.Class.getDeclaredMethods(Unknown Source) [rt.jar:1.6.0_29]
      at org.jboss.as.server.deployment.reflect.ClassReflectionIndex.<init>(ClassReflectionIndex.java:65) [jboss-as-server-7.1.0.Final-redhat-1.jar:7.1.0.Final-redhat-1]
      at org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex.getClassIndex(DeploymentReflectionIndex.java:66) [jboss-as-server-7.1.0.Final-redhat-1.jar:7.1.0.Final-redhat-1]
      ... 10 more
  Caused by: java.lang.ClassNotFoundException: org.jboss.web.tomcat.security.login.WebAuthentication from [Module "deployment.GenericAppEAR.ear:main" from Service Module Loader]
      at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)
      at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)
      at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)
      at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:423)
      at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
      at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)
      ... 15 more