Seeing the following after the deploy (happened twice):
Jun 30 23:21:00 mw1017: #012Notice: Undefined index: P11 in /srv/mediawiki/php-1.26wmf12/extensions/Wikidata/vendor/wikibase/data-model/src/Snak/SnakList.php on line 129 Jun 30 23:21:00 mw1017: #012Warning: Invalid argument supplied for foreach() in /srv/mediawiki/php-1.26wmf12/extensions/Wikidata/vendor/wikibase/data-model/src/Snak/SnakList.php on line 141
All this code is old, from 2013, and untouched since then. Is there more in the log? Who calls SnakList::orderByProperty()? And yes, there is an actual bug in the code that never had a test. I'm going to fix it.
That's the problem with these logs… we don't have any traces or request URLs or anything :( If I had more information, I would have posted it.
Haha, this bug showed up because addshore is in the office now and can be raged to :)