Saxon

When I try to run Saxon Java 12.4 EE or SaxonCS 12.4 from the command line to validate the attached XML against the attached XSD schema, the validation error is found fine.

However, when I try to use -report:report.xml to have Saxon generate a validation report, it fails with java.lang.NullPointerException for Saxon EE Java and System.NullReferenceException for SaxonCS.

Stack trace Saxon 12.4 Java EE:

java.lang.NullPointerException
        at com.saxonica.ee.validate.InvalidityReportGeneratorEE.reportInvalidity(InvalidityReportGeneratorEE.java:168)
        at com.saxonica.ee.validate.SelectorWatch.reportValidationError(SelectorWatch.java:601)
        at com.saxonica.ee.validate.SelectorWatch.checkRow(SelectorWatch.java:269)
        at com.saxonica.ee.validate.KeySelectorWatch.checkRow(KeySelectorWatch.java:49)
        at com.saxonica.ee.validate.SelectorWatch.endSelectedParentNode(SelectorWatch.java:107)
        at com.saxonica.ee.stream.watch.WatchManager.endElement(WatchManager.java:544)
        at net.sf.saxon.event.TeeOutputter.endElement(TeeOutputter.java:145)
        at net.sf.saxon.event.TeeOutputter.endElement(TeeOutputter.java:144)
        at net.sf.saxon.event.ProxyReceiver.endElement(ProxyReceiver.java:149)
        at com.saxonica.ee.validate.EmptyContentValidator.endElement(EmptyContentValidator.java:155)
        at com.saxonica.ee.validate.ValidationStack.endElement(ValidationStack.java:490)
        at net.sf.saxon.event.ProxyReceiver.endElement(ProxyReceiver.java:149)
        at net.sf.saxon.event.ProxyReceiver.endElement(ProxyReceiver.java:149)
        at com.saxonica.ee.validate.AttributeInheritor.endElement(AttributeInheritor.java:63)
        at net.sf.saxon.event.PathMaintainer.endElement(PathMaintainer.java:60)
        at net.sf.saxon.event.DocumentValidator.endElement(DocumentValidator.java:79)
        at net.sf.saxon.event.ReceivingContentHandler.endElement(ReceivingContentHandler.java:578)
        at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:610)
        at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:184)
        at java.xml/com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:351)
        at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2710)
        at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:605)
        at java.xml/com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
        at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:534)
        at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:888)
        at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:824)
        at java.xml/com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
        at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1216)
        at java.xml/com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:635)
        at net.sf.saxon.resource.ActiveSAXSource.deliver(ActiveSAXSource.java:192)
        at net.sf.saxon.event.Sender.send(Sender.java:104)
        at com.saxonica.ee.s9api.SchemaValidatorImpl.validate(SchemaValidatorImpl.java:624)
        at com.saxonica.Validate.processFile(Validate.java:603)
        at com.saxonica.Validate.doValidate(Validate.java:421)
        at com.saxonica.Validate.main(Validate.java:56)

Stack trace SaxonCS 12.4:

System.NullReferenceException: Object reference not set to an instance of an object.
   at Saxon.Eej.ee.validate.InvalidityReportGeneratorEE.reportInvalidity(Invalidity failure)
   at Saxon.Eej.ee.validate.SelectorWatch.reportValidationError(ValidationFailure err, Location locator)
   at Saxon.Eej.ee.validate.SelectorWatch.checkRow(AtomicSequence[] currentRow, Boolean isTarget, Location locationId)
   at Saxon.Eej.ee.validate.KeySelectorWatch.checkRow(AtomicSequence[] currentRow, Boolean isTarget, Location locationId)
   at Saxon.Eej.ee.validate.SelectorWatch.endSelectedParentNode(Location locationId)
   at Saxon.Eej.ee.stream.watch.WatchManager.endElement()
   at Saxon.Hej.event.TeeOutputter.endElement()
   at Saxon.Hej.event.TeeOutputter.endElement()
   at Saxon.Eej.ee.validate.EmptyContentValidator.endElement()
   at Saxon.Eej.ee.validate.ValidationStack.endElement()
   at Saxon.Hej.event.ProxyReceiver.endElement()
   at Saxon.Eej.ee.validate.AttributeInheritor.endElement()
   at Saxon.Hej.event.PathMaintainer.endElement()
   at Saxon.Hej.event.DocumentValidator.endElement()
   at Saxon.Hej.pull.PullPushTee.copyEvent(PullEvent event)
   at Saxon.Hej.pull.PullPushTee.next()
   at Saxon.Hej.pull.PullPushCopier.copy()
   at Saxon.Hej.pull.PullSource.deliver(Receiver receiver, ParseOptions options)
   at Saxon.Hej.event.Sender.send(Source source, Receiver receiver, ParseOptions options)
   at Saxon.Eej.ee.s9api.SchemaValidatorImpl.validate(Source source)
   at Saxon.Eej.Validate.processFile(Source source, SchemaValidator validator)
   at Saxon.Eej.Validate.doValidate(String[] args)
Fatal error during validation: Object reference not set to an instance of an object.

I file that on category command line as the only schema related category "Schema conformance" doesn't seem adequate for the Saxon specific validation report. But the error seems to occur as well in C# code trying to use the SaxonCS API to generate a validation report.