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java.lang.ClassCastException: 	at java.lang.Class.cast(Class.java:2990)	at org.glassfish.persistence.jpa.PersistenceUnitLoader.loadPU(PersistenceUnitLoader.java:173)	at org.glassfish.persistence.jpa.PersistenceUnitLoader.(PersistenceUnitLoader.java:119)	at org.glassfish.persistence.jpa.JPADeployer$1.visitPUD(JPADeployer.java:213)	at org.glassfish.persistence.jpa.JPADeployer$PersistenceUnitDescriptorIterator.iteratePUDs(JPADeployer.java:486)	at org.glassfish.persistence.jpa.JPADeployer.createEMFs(JPADeployer.java:220)	at org.glassfish.persistence.jpa.JPADeployer.prepare(JPADeployer.java:166)	at com.sun.enterprise.v3.server.ApplicationLifecycle.prepareModule(ApplicationLifecycle.java:870)	at org.glassfish.javaee.full.deployment.EarDeployer.prepareBundle(EarDeployer.java:290)	at org.glassfish.javaee.full.deployment.EarDeployer.access$200(EarDeployer.java:86)	at org.glassfish.javaee.full.deployment.EarDeployer$1.doBundle(EarDeployer.java:141)	at org.glassfish.javaee.full.deployment.EarDeployer$1.doBundle(EarDeployer.java:138)	at org.glassfish.javaee.full.deployment.EarDeployer.doOnBundles(EarDeployer.java:215)	at org.glassfish.javaee.full.deployment.EarDeployer.doOnAllTypedBundles(EarDeployer.java:224)	at org.glassfish.javaee.full.deployment.EarDeployer.doOnAllBundles(EarDeployer.java:250)	at org.glassfish.javaee.full.deployment.EarDeployer.prepare(EarDeployer.java:138)	at com.sun.enterprise.v3.server.ApplicationLifecycle.prepareModule(ApplicationLifecycle.java:870)	at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:410)	at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:240)	at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:370)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:360)	at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:370)	at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1067)	at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1200(CommandRunnerImpl.java:96)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1247)	at org.glassfish.deployment.autodeploy.AutoOperation.run(AutoOperation.java:145)	at org.glassfish.deployment.autodeploy.AutoDeployer.deploy(AutoDeployer.java:577)	at org.glassfish.deployment.autodeploy.AutoDeployer.deployAll(AutoDeployer.java:463)	at org.glassfish.deployment.autodeploy.AutoDeployer.run(AutoDeployer.java:395)	at org.glassfish.deployment.autodeploy.AutoDeployer.run(AutoDeployer.java:380)	at org.glassfish.deployment.autodeploy.AutoDeployService$1.run(AutoDeployService.java:213)	at java.util.TimerThread.mainLoop(Timer.java:512)	at java.util.TimerThread.run(Timer.java:462)