Ladsgroup added subscribers: Tonina_Zhelyazkova_WMDE, Addshore. Ladsgroup added a comment.
It still happens. By examining a bit I realized I'm extremely stupid. This isn't beta cluster (it's test in production) and also this is not impossible (so opcache corruption, it actually happens consistently). It happens when you request an non-existing entity in Special:EntityData in HTML mode (not json/rdf) which EntityTitleLookup::getTitleForId() returns null when the entity doesn't exist (in EntityDataUriManager::getDocTitle()) and that explains why https://test-commons.wikimedia.org/wiki/Special:EntityData/M215215.json doesn't trigger an error while https://test-commons.wikimedia.org/wiki/Special:EntityData/M215215 does. What I don't understand is that why non-existing item doesn't trigger an error in test wikidata: https://test.wikidata.org/wiki/Special:EntityData/Q666666666666 Adding @Addshore who touched the config of this wiki recently (for entity sources) and @Tonina_Zhelyazkova_WMDE as this week's incident manager. TASK DETAIL https://phabricator.wikimedia.org/T258628 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Ladsgroup Cc: Addshore, Tonina_Zhelyazkova_WMDE, Ladsgroup, mdaniels5757, jeena, Aklapper, Akuckartz, darthmon_wmde, Nandana, Lahi, Gq86, GoranSMilovanovic, QZanden, LawExplorer, _jensen, rosalieper, Scott_WUaS, Jonas, Wikidata-bugs, aude, Lydia_Pintscher, Jdforrester-WMF, Mbch331, Rxy, Jay8g, Krenair
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