['Traceback (most recent call last):\n', '  File "app.py", line 76, in queries\n    column, grouping\n', '  File "./property_statistics.py", line 75, in get_query_for_items_for_property_positive\n    column_key = column.get_key()\n', "AttributeError: 'NoneType' object has no attribute 'get_key'\n"]

When I try to use the Integraality table using a qualifier of a property, not directly the main value of the property, I get an error instead of a link to the with/without SPARQL queries. The Integraality table used was https://www.wikidata.org/wiki/Wikidata:WikiProject_Figure_skating/Statistics the qualifiers are P155 and P156

The other cells, which use values instead of qualifiers, work fine.

I don't know when it stopped working, sometimes after 2019, it may be an old bug…