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java.lang.ExceptionInInitializerError at util.HibernateUtil.<clinit>(HibernateUtil.java:21) at manager.LecteursManager.ajouterLecteur(LecteursManager.java:13) at test.Test_Main.main(Test_Main.java:18)Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from resource bean/Lecteurs.hbm.xml at org.hibernate.cfg.Configuration.addResource(Configuration.java:616) at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1635) at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1603) at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1582) at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1556) at org.hibernate.cfg.Configuration.configure(Configuration.java:1476) at org.hibernate.cfg.Configuration.configure(Configuration.java:1462) at util.HibernateUtil.<clinit>(HibernateUtil.java:15) ... 2 moreCaused by: org.hibernate.InvalidMappingException: Could not parse mapping document from input stream at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:555) at org.hibernate.cfg.Configuration.addResource(Configuration.java:613) ... 9 moreCaused by: org.dom4j.DocumentException: Error on line 13 of document : need whitespace between attributes Nested exception: need whitespace between attributes at org.dom4j.io.SAXReader.read(SAXReader.java:482) at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:546) ... 10 more