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via Stack Overflow by developer10
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Unable to retrieve EntityManagerFactory for unitName AffableBeanPU
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Unable to retrieve EntityManagerFactory for unitName AffableBeanPU
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java.lang.IllegalStateException: Unable to retrieve EntityManagerFactory for unitName null	at com.sun.enterprise.container.common.impl.EntityManagerWrapper.init(EntityManagerWrapper.java:138)	at com.sun.enterprise.container.common.impl.EntityManagerWrapper._getDelegate(EntityManagerWrapper.java:171)	at com.sun.enterprise.container.common.impl.EntityManagerWrapper.createQuery(EntityManagerWrapper.java:477)