java.lang.NullPointerException: in is null

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You try to create a ZipInputStream from a null InputStream.

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java.lang.NullPointerException: in is null
at java.util.zip.ZipInputStream.(ZipInputStream.java:64)
at java.util.jar.JarInputStream.(JarInputStream.java:57)
at java.util.jar.JarInputStream.(JarInputStream.java:43)
at org.hibernate.ejb.packaging.InputStreamZippedJarVisitor.doProcessElements(InputStreamZippedJarVisitor.java:57)
at org.hibernate.ejb.packaging.AbstractJarVisitor.getMatchingEntries(AbstractJarVisitor.java:146)
at org.hibernate.ejb.packaging.NativeScanner.getFilesInJar(NativeScanner.java:192)
at org.hibernate.ejb.Ejb3Configuration.addScannedEntries(Ejb3Configuration.java:490)
at org.hibernate.ejb.Ejb3Configuration.scanForClasses(Ejb3Configuration.java:832)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:586)

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