Saxon

When upgrading from Saxon-EE 10.8 to 11.3 we get an error message when using saxon:transform() with stylesheets without primary output:

java.lang.NullPointerException
	at net.sf.saxon.expr.FunctionCall.iterate(FunctionCall.java:562)
	at net.sf.saxon.expr.Expression.evaluateItem(Expression.java:852)
	at net.sf.saxon.expr.parser.Evaluator$OptionalItem.evaluate(Evaluator.java:201)
	at net.sf.saxon.expr.SystemFunctionCall.evaluateArguments(SystemFunctionCall.java:469)
	at net.sf.saxon.expr.FunctionCall.iterate(FunctionCall.java:560)
	at net.sf.saxon.expr.parser.Evaluator$EagerSequence.evaluate(Evaluator.java:304)
	at net.sf.saxon.expr.instruct.WithParam.getSelectValue(WithParam.java:317)
	at net.sf.saxon.expr.instruct.Instruction.assembleParams(Instruction.java:204)
	at net.sf.saxon.expr.instruct.CallTemplate.processLeavingTail(CallTemplate.java:429)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:755)
	at net.sf.saxon.expr.instruct.NamedTemplate.expand(NamedTemplate.java:266)
	at net.sf.saxon.expr.instruct.CallTemplate$CallTemplatePackage.processLeavingTail(CallTemplate.java:561)
	at net.sf.saxon.expr.instruct.CallTemplate.process(CallTemplate.java:386)
	at net.sf.saxon.expr.instruct.CallTemplate.processLeavingTail(CallTemplate.java:446)
	at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:755)
	at com.saxonica.ee.bytecode.ByteCodeCandidate.processLeavingTail(ByteCodeCandidate.java:185)
	at net.sf.saxon.expr.instruct.NamedTemplate.expand(NamedTemplate.java:266)
	at net.sf.saxon.trans.XsltController.callTemplate(XsltController.java:873)
	at net.sf.saxon.s9api.Xslt30Transformer.callTemplate(Xslt30Transformer.java:483)
	at net.sf.saxon.Transform.processFile(Transform.java:1380)
	at net.sf.saxon.Transform.doTransform(Transform.java:869)
	at net.sf.saxon.Transform.main(Transform.java:81)

See also bug #4403.