My report (containing many subreports) makes this warning appear:
I searched on the Internet, it was discussed in a 2009 thread, the conclusion was that it was a bug that has been fixed in August 2009, if I understood well.
Deprecated behavior: None of the data-factories was able to handle this query. Returning empty tablemodel instead of failing hard.
WARN - Be aware that the default for this setting will change in version 0.8.11. To avoid this warning, make sure that all data-sources are properly configured and that no report references illegal queries.
I am pretty sure that all of my sub-reports have valid data sources, and indeed my report is generated correctly, including all sub-reports.
Is there something wrong in my report that this warning is telling me about?
If not, can I safely ignore this warning?