Spring WebFlow Throwing NullPointerException After JBoss EAP Migration

Issue

• We patched JBoss EAP from 7.1.6.GA to 7.3.7.GA. After upgrading, we are seeing the following errors for one of the deployed applications.

  SEVERE [javax.enterprise.resource.webcontainer.jsf.config] (ServerService Thread Pool -- 86) Critical error during deployment: : java.lang.NullPointerException
    at com.sun.faces.application.ApplicationAssociate$PostConstructApplicationListener.processEvent(ApplicationAssociate.java:324) [jsf-impl-2.3.9.SP13-redhat-00001.jar:2.3.9.SP13-redhat-00001]
    (...)
    at org.springframework.faces.webflow.Jsf2FlowApplication.publishEvent(Jsf2FlowApplication.java:90) [spring-faces-2.2.0.RELEASE.jar:2.2.0.RELEASE]
    (...)