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

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This exception has no message.
java.lang.NullPointerException:
at oracle.dfw.sampling.DumpSamplingArchive.executeDump(DumpSamplingArchive.java:101)
at oracle.dfw.impl.dump.DumpManagerImpl.executeDump(DumpManagerImpl.java:567)
at oracle.dfw.impl.incident.DiagnosticsDataExtractorImpl$SingleDumpExecutor$2.run(DiagnosticsDataExtractorImpl.java:2050)
at oracle.dfw.impl.incident.DiagnosticsDataExtractorImpl$SingleDumpExecutor$2.run(DiagnosticsDataExtractorImpl.java:2046)
at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:324)
at oracle.security.jps.internal.jaas.AccActionExecutor.execute(AccActionExecutor.java:74)
at oracle.security.jps.internal.jaas.AbstractSubjectSecurity$ActionExecutorWrapper.execute(AbstractSubjectSecurity.java:242)
at oracle.security.jps.internal.jaas.CascadeActionExecutor$SubjectPrivilegedExceptionAction.run(CascadeActionExecutor.java:83)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:146)
at weblogic.security.Security.runAs(Security.java:61)
at oracle.security.jps.wls.jaas.WlsActionExecutor.execute(WlsActionExecutor.java:51)
at oracle.security.jps.internal.jaas.CascadeActionExecutor.execute(CascadeActionExecutor.java:56)
at oracle.security.jps.internal.jaas.AbstractSubjectSecurity$ActionExecutorWrapper.execute(AbstractSubjectSecurity.java:242)
at oracle.security.jps.internal.jaas.AbstractSubjectSecurity.executeAs(AbstractSubjectSecurity.java:196)
at oracle.dfw.spi.weblogic.SecurityContextImpl.executeAs(SecurityContextImpl.java:130)
at oracle.dfw.impl.incident.DiagnosticsDataExtractorImpl$SingleDumpExecutor$3.run(DiagnosticsDataExtractorImpl.java:2063)
at oracle.dfw.impl.incident.DiagnosticsDataExtractorImpl$SingleDumpExecutor$3.run(DiagnosticsDataExtractorImpl.java:2059)
at oracle.dfw.impl.incident.DiagnosticsDataExtractorImpl$SingleDumpExecutor.call(DiagnosticsDataExtractorImpl.java:2056)

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