RDF Dataset is set inappropriately
Dataset is set in both the query and the options, making the SPARQL request not compliant with SPARQL 1.1 specification.
Check the query and the options
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Stack Overflow: Get the most useful answers to questions from the MarkLogic community, or ask your own question.Stack Overflow: Get the most useful answers to questions from the MarkLogic community, or ask your own question.