PropertySuggester's extension.json currently sets PropertySuggesterClassifyingPropertyIds to [ 31 ]: https://github.com/Wikidata-lib/PropertySuggester/blob/master/extension.json. However, PropertySuggester-Python's analyzer.ini sets it to [ 31, 279 ], see https://github.com/Wikidata-lib/PropertySuggester-Python/blob/master/propertysuggester/analyzer/analyzer.ini.

These two settings need to be consistent, otherwise the data generated by the python script will not be interpreted correctly by the PHP code of the MediaWIki extension. Having different defaults for this setting is asking for trouble (which we are indeed in now, see T168434).