java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at weblogic.utils.enumerations.FileEnumeration.getNextFile(FileEnumeration.java:155)
at weblogic.utils.enumerations.FileEnumeration.hasMoreFiles(FileEnumeration.java:102)
at weblogic.utils.enumerations.FileEnumeration.hasMoreElements(FileEnumeration.java:134)
at weblogic.utils.jars.ExplodedJarFile$1.hasNext(ExplodedJarFile.java:112)
at weblogic.utils.classloaders.ExtractionHelper.extractClassFiles(ExtractionHelper.java:117)
at weblogic.servlet.internal.WebAppServletContext.extractClassFiles(WebAppServletContext.java:5119)
at weblogic.servlet.internal.WebAppServletContext.setDocroot(WebAppServletContext.java:4991)
at weblogic.servlet.internal.WebAppServletContext.init(WebAppServletContext.java:560)
at weblogic.servlet.internal.WebAppServletContext.(WebAppServletContext.java:511)
at weblogic.servlet.internal.HttpServer.loadWebApp(HttpServer.java:594)
at weblogic.j2ee.J2EEApplicationContainer.prepareWebModule(J2EEApplicationContainer.java:2896)
at weblogic.j2ee.J2EEApplicationContainer.prepareModules(J2EEApplicationContainer.java:1532)
at weblogic.j2ee.J2EEApplicationContainer.prepare(J2EEApplicationContainer.java:1188)
at weblogic.j2ee.J2EEApplicationContainer.prepare(J2EEApplicationContainer.java:1031)
at weblogic.j2ee.J2EEApplicationContainer.prepare(J2EEApplicationContainer.java:822)
at weblogic.management.deploy.slave.SlaveDeployer$Application.prepare(SlaveDeployer.java:3085)
at weblogic.management.deploy.slave.SlaveDeployer.prepareAllApplications(SlaveDeployer.java:930)
at weblogic.management.deploy.slave.SlaveDeployer.resume(SlaveDeployer.java:398)
at weblogic.management.deploy.DeploymentManagerServerLifeCycleImpl.resume(DeploymentManagerServerLifeCycleImpl.java:230)
at weblogic.t3.srvr.SubsystemManager.resume(SubsystemManager.java:131)
at weblogic.t3.srvr.T3Srvr.resume(T3Srvr.java:964)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:359)
at weblogic.Server.main(Server.java:32)

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