Hi Marc Schipperheyn, your stack track seems to suggest that an error occurs when one of the matching values is getting converted from object to string. This happens automatically to allow passing actual objects to matching() instead of strings. However, this conversion does not occur if ignoreAnalyzer() is specified. AFAIKS all your query parts specify ignoreAnalyzer(), so I am not quite sure how the exception can occur in this case.

Is this the exact code causing the exception? Any chance you could extract a test case?