Error during .war deployment on WildFly 26.3

[Juoņs Kryšans]

I receive an error during .war deployment in WildFly 26.3
{"WFLYCTL0062: Composite operation failed and was rolled back. Steps that failed:" => {"Operation step-2" => {"WFLYCTL0080: Failed services" => {"jboss.persistenceunit.\"myapp.war#PU\"" => "java.lang.NullPointerException
    Caused by: java.lang.NullPointerException"}}}}

Server log says:
2023-03-29 15:56:16,017 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 24) MSC000001: Failed to start service jboss.persistenceunit."myapp.war#PU": org.jboss.msc.service.StartException in service jboss.persistenceunit."myapp.war#PU": java.lang.NullPointerException
        at org.jboss.as.jpa 26.1.3.Final//org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1$1.run(PersistenceUnitServiceImpl.java:199)
        at org.jboss.as.jpa 26.1.3.Final//org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1$1.run(PersistenceUnitServiceImpl.java:129)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at org.wildfly.security.elytron-base 1.19.1.Final//org.wildfly.security.manager.WildFlySecurityManager.doChecked(WildFlySecurityManager.java:664)
        at org.jboss.as.jpa 26.1.3.Final//org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1.run(PersistenceUnitServiceImpl.java:214)
        at org.jboss.threads 2.4.0.Final//org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
        at org.jboss.threads 2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1990)
        at org.jboss.threads 2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
        at org.jboss.threads 2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
        at java.base/java.lang.Thread.run(Thread.java:829)
        at org.jboss.threads 2.4.0.Final//org.jboss.threads.JBossThread.run(JBossThread.java:513)
Caused by: java.lang.NullPointerException
        at org.eclipse.persistence//org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:2027)
        at org.eclipse.persistence//org.eclipse.persistence.jpa.PersistenceProvider.createContainerEntityManagerFactoryImpl(PersistenceProvider.java:347)
        at org.eclipse.persistence//org.eclipse.persistence.jpa.PersistenceProvider.createContainerEntityManagerFactory(PersistenceProvider.java:313)
        at org.jboss.as.jpa 26.1.3.Final//org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:367)
        at org.jboss.as.jpa 26.1.3.Final//org.jboss.as.jpa.service.PersistenceUnitServiceImpl.access$1400(PersistenceUnitServiceImpl.java:71)
        at org.jboss.as.jpa 26.1.3.Final//org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1$1.run(PersistenceUnitServiceImpl.java:191)
        ... 10 more

2023-03-29 15:56:16,023 ERROR [org.jboss.as.controller.management-operation] (management-handler-thread - 1) WFLYCTL0013: Operation ("deploy") failed - address: ({"deployment" => "myapp.war"}) - failure description: {"WFLYCTL0080: Failed services" => {"jboss.persistenceunit.\"myapp.war#PU\"" => "java.lang.NullPointerException
    Caused by: java.lang.NullPointerException"}}

Does anyone has suggestions on the issue?

[Scott Marlow]

What version of EclipseLink are you using?  Perhaps EclipseLink version 2.7.10?

[Juoņs Kryšans]

It's eclipselink-2.6.3.

[Scott Marlow]

Could you try a more recent EclipseLink 2.* version like 2.7.12 or 2.7.10?  You could also try looking at the EclipseLink 2.6.3 source for the EclipseLink class that has a null pointer to see why the NullPointerException is thrown.