You can see the persistence.xml on META-INF
META-INF/persistence.xml
Yes, I did see that. I meant that the persistence unit deployment code in WildFly doesn't see it for some reason. Please see my last response about creating a simpler deployment and see if the persistence.xml related message that I mentioned, is logged.
Can you paste your current boot log with all the stuff removed.
also can you post content of application.xml
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tomaz