org.hibernate.HibernateException: Errors in named queries: ... in JBoss EAP 6

Issue

We have a deployment issue with our war, it is failing with org.hibernate.HibernateException: Errors in named queries:

Caused by: javax.persistence.PersistenceException: [PersistenceUnit: examplePU] Unable to build EntityManagerFactory
  at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:915)
  at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:890)
  at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:74)
  at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:197) [jboss-as-jpa-7.1.3.Final-redhat-4.jar:7.1.3.Final-redhat-4]
  at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.access$500(PersistenceUnitServiceImpl.java:57) [jboss-as-jpa-7.1.3.Final-redhat-4.jar:7.1.3.Final-redhat-4]
  at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1.run(PersistenceUnitServiceImpl.java:96) [jboss-as-jpa-7.1.3.Final-redhat-4.jar:7.1.3.Final-redhat-4]
  ... 4 more
Caused by: org.hibernate.HibernateException: Errors in named queries: findUserByUserName
  at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:515)
  at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1746)
  at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:94)
  at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:905)
  ... 9 more