JBWEB000250: Child container with name already exists in JBoss EAP 6

Issue

• Web application failing to start with the following exception:

09:48:48,993 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000001: Failed to start service jboss.web.deployment.default-host./: org.jboss.msc.service.StartException in service jboss.web.deployment.default-host./: Failed to start service
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1936) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_51]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_51]
    at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_51]
Caused by: java.lang.IllegalArgumentException: JBWEB000250: Child container with name  already exists
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:794)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:785)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:353)
    at org.jboss.as.web.deployment.WebContextInjector.inject(WebContextInjector.java:62)
    at org.jboss.as.web.deployment.WebContextInjector.inject(WebContextInjector.java:38)
    at org.jboss.msc.inject.CastingInjector.inject(CastingInjector.java:55) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
    at org.jboss.msc.service.ServiceControllerImpl.doInject(ServiceControllerImpl.java:1704) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
    at org.jboss.msc.service.ServiceControllerImpl.access$2000(ServiceControllerImpl.java:52) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.performInjections(ServiceControllerImpl.java:1949) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1908) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
    ... 3 more

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