java.util.concurrent.ExecutionException: java.lang.NullPointerException

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java.lang.NullPointerException
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java.lang.NullPointerException
java.util.concurrent.ExecutionException: java.lang.NullPointerException
at org.owasp.dependencycheck.dependency.Reference.compareTo(Reference.java:144)
at java.util.TreeMap.compare(TreeMap.java:1290)
at java.util.TreeMap.put(TreeMap.java:538)
at java.util.TreeSet.add(TreeSet.java:255)
at org.owasp.dependencycheck.data.update.nvd.NvdCve20Handler.endElement(NvdCve20Handler.java:205)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:609)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1783)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2970)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParserImpl.java:327)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:328)
at org.owasp.dependencycheck.data.update.nvd.ProcessTask.importXML(ProcessTask.java:150)
at org.owasp.dependencycheck.data.update.nvd.ProcessTask.processFiles(ProcessTask.java:162)
at org.owasp.dependencycheck.data.update.nvd.ProcessTask.call(ProcessTask.java:116)
at org.owasp.dependencycheck.data.update.nvd.ProcessTask.call(ProcessTask.java:45)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

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