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• GENE Graph Export Engine

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I got "Document must not contain null namespace" error?

Well yeah. GENE is based on namespaces - it builds transformation graph and chooses exporters based on the information provided by namespaces. So, if document contains at least one element with null namespace then GENE cannot decide what to do with such element.

To get rid of the problem just declare a correct namespace for the document. For example, for namespaceless DocBook XML just add xmlns="http://docbook.org/ns/docbook" attribute to root element.

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