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net.sf.hibernate.MappingException: property does not exist: userName	at net.sf.hibernate.persister.AbstractEntityPersister.getPropertyType(AbstractEntityPersister.java:1133)	at com.atlassian.confluence.importexport.xmlimport.persister.AbstractObjectPersister.getPrimitivePropertyValue(AbstractObjectPersister.java:45)	at com.atlassian.confluence.importexport.xmlimport.persister.HibernateContentPermissionPersister.updateProperty(HibernateContentPermissionPersister.java:67)	at com.atlassian.confluence.importexport.xmlimport.persister.HibernateContentPermissionPersister.persist(HibernateContentPermissionPersister.java:43)	at com.atlassian.confluence.importexport.xmlimport.DefaultImportProcessor.persist(DefaultImportProcessor.java:47)	at com.atlassian.confluence.importexport.xmlimport.DefaultImportProcessor.processObject(DefaultImportProcessor.java:37)	at com.atlassian.confluence.importexport.xmlimport.parser.BackupParser.endElement(BackupParser.java:51)	at com.atlassian.confluence.importexport.xmlimport.parser.BackupParser.endElement(BackupParser.java:55)	at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)	at com.atlassian.security.xml.RestrictedXMLReader.parse(RestrictedXMLReader.java:103)	at com.atlassian.confluence.importexport.xmlimport.DefaultXmlImporter.parseBackup(DefaultXmlImporter.java:103)	at com.atlassian.confluence.importexport.xmlimport.DefaultXmlImporter.doImport(DefaultXmlImporter.java:61)