com.sun.faces.config.FacesInitializer: java.lang.NullPointerException

Issue

• We see the following exception as our application starts:

JBWEB000287: Exception sending context initialized event to listener instance of class com.sun.faces.config.ConfigureListener: java.lang.NullPointerException
    at com.sun.faces.config.InitFacesContext.cleanupInitMaps(InitFacesContext.java:281) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
    at com.sun.faces.config.InitFacesContext.<init>(InitFacesContext.java:107) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
    at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:149) [jsf-impl-2.1.19-redhat-2.jar:2.1.19-redhat-2]
    at org.apache.catalina.core.StandardContext.contextListenerStart(StandardContext.java:3339) [jbossweb-7.5.9.Final-redhat-1.jar:7.5.9.Final-redhat-1]
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:3780) [jbossweb-7.5.9.Final-redhat-1.jar:7.5.9.Final-redhat-1]
    at org.jboss.as.web.deployment.WebDeploymentService.doStart(WebDeploymentService.java:163) [jboss-as-web-7.5.2.Final-redhat-2.jar:7.5.2.Final-redhat-2]
    at org.jboss.as.web.deployment.WebDeploymentService.access$000(WebDeploymentService.java:61) [jboss-as-web-7.5.2.Final-redhat-2.jar:7.5.2.Final-redhat-2]
    at org.jboss.as.web.deployment.WebDeploymentService$1.run(WebDeploymentService.java:96) [jboss-as-web-7.5.2.Final-redhat-2.jar:7.5.2.Final-redhat-2]