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java.lang.NullPointerException: entry	at java.util.zip.ZipFile.getInputStream(ZipFile.java:342)	at org.dspace.content.packager.AbstractMETSIngester.getFileInputStream(AbstractMETSIngester.java:1490)	at org.dspace.content.packager.AbstractMETSIngester.addBitstreams(AbstractMETSIngester.java:776)	at org.dspace.content.packager.AbstractMETSIngester.ingestObject(AbstractMETSIngester.java:500)	at org.dspace.content.packager.AbstractMETSIngester.ingest(AbstractMETSIngester.java:234)	at org.dspace.sword.SWORDMETSIngester.ingest(SWORDMETSIngester.java:93)	at org.dspace.sword.CollectionDepositor.doDeposit(CollectionDepositor.java:111)	at org.dspace.sword.DepositManager.deposit(DepositManager.java:148)	at org.dspace.sword.DSpaceSWORDServer.doDeposit(DSpaceSWORDServer.java:120)	at org.purl.sword.server.DepositServlet.doPost(DepositServlet.java:299)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)	at org.apache.coyote.ajp.AjpAprProcessor.process(AjpAprProcessor.java:197)	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603)	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2430)	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2419)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:744)