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    • com.sun.enterprise.deployment.backend.IASDeploymentException: Error loading deployment descriptors for module [appress] -- Invalid ejb jar [appressEJB.jar]: it contains zero ejb. Note: 1. A valid ejb jar requires at least one session, entity (1.x/2.x style), or message driven bean. 2. EJB3+ entity beans (@Entity) are POJOs and please package them as library jar. at com.sun.enterprise.deployment.backend.Deployer.loadDescriptors( at com.sun.enterprise.deployment.backend.AppDeployerBase.loadDescriptors( at com.sun.enterprise.deployment.backend.AppDeployer.explodeArchive( at com.sun.enterprise.deployment.backend.AppDeployer.deploy( at com.sun.enterprise.deployment.backend.AppDeployer.doRequestFinish( at com.sun.enterprise.deployment.phasing.J2EECPhase.runPhase( at com.sun.enterprise.deployment.phasing.DeploymentPhase.executePhase( at com.sun.enterprise.deployment.phasing.PEDeploymentService.executePhases( at com.sun.enterprise.deployment.phasing.PEDeploymentService.deploy( at com.sun.enterprise.deployment.phasing.PEDeploymentService.deploy( at at
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