java.lang.NullPointerException

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  • java.lang.NullPointerException at oracle.toplink.essentials.exceptions.EntityManagerSetupException.predeployFailed(EntityManagerSetupException.java:212) Caused by: java.lang.NullPointerException at oracle.toplink.essentials.internal.ejb.cmp3.xml.XMLHelper.parseDocument(XMLHelper.java:623) at oracle.toplink.essentials.internal.ejb.cmp3.metadata.MetadataProcessor.readStandardMappingFiles(MetadataProcessor.java:369) at oracle.toplink.essentials.internal.ejb.cmp3.metadata.MetadataProcessor.readMappingFiles(MetadataProcessor.java:339) at oracle.toplink.essentials.ejb.cmp3.persistence.PersistenceUnitProcessor.processORMetadata(PersistenceUnitProcessor.java:344) at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:584) ... 1 more
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