Apache Axis complains about Domino Web Service "prefixed namespace bindings"

I’m using Axis 1.3 to read a very simple Web Service on Domino 7.0 server.WebServices - Axis

Here’s the LotusScript code for the Web Service:

Class DEMO

Public Function PING( reply As String ) As String

	PING = ">>>" + reply + "<<<"

End Function

End Class

And here is the error from Apache Axis:

org.xml.sax.SAXParseException: The value of the attribute "prefix=“xmlns”,localpart=“ns1”,rawname=“xmlns:ns1"” is invalid. Prefixed namespace bindings may not be empty.

Is there a bug with Domino7’s WSDL generation?

Is there a alternative Java package for Apache Axis?

Here’s the Tutorial I’m reading: Quickly create Domino Web services: New Web services function in Domino 7 speeds development