Lucas_Werkmeister_WMDE added subscribers: Moebeus, Smalyshev, Lucas_Werkmeister_WMDE. Lucas_Werkmeister_WMDE triaged this task as "High" priority. Lucas_Werkmeister_WMDE added a comment.
Those errors usually happen when the query returns 0 results and the visualization is not able to handle it, and that seems to be what’s happening. @Moebeus also reported on Telegram that there are lots of broken “distinct values” constraint violations, e. g. on Donald Trump <https://www.wikidata.org/wiki/Q22686>’s subreddit, that the value is also present on “P28228919 (Deleted Property)”. In fact, the value is present on //Q//28228919, the dedicated item for r/The_Donald. F30041457: Screenshot_2019-08-16 Donald Trump.png <https://phabricator.wikimedia.org/F30041457> F30041458: Screenshot_2019-08-16 r The_Donald.png <https://phabricator.wikimedia.org/F30041458> And the “cats” example query returns 0 results: SELECT ?item ?itemLabel WHERE { ?item wdt:P31 wd:Q146. SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". } } However, after changing `Q146` to `P146`, it returns the usual 142 results (CC, Mrs. Chippy, F. D. C. Willard, etc.): SELECT ?item ?itemLabel WHERE { ?item wdt:P31 wd:Q146. SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". } } @Smalyshev it looks like the query service is mixing up P- and Q-IDs, somehow? Were there any recent changes to the internal vocabulary? TASK DETAIL https://phabricator.wikimedia.org/T230588 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Lucas_Werkmeister_WMDE Cc: Lucas_Werkmeister_WMDE, Smalyshev, Moebeus, Aklapper, Fnielsen, darthmon_wmde, DannyS712, Nandana, Lahi, Gq86, GoranSMilovanovic, QZanden, EBjune, merbst, LawExplorer, _jensen, rosalieper, Jonas, Xmlizer, jkroll, Wikidata-bugs, Jdouglas, aude, Tobias1984, Manybubbles, Mbch331
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