Spotted in production:
DomainException: NullResult holds no constraint
Urls all seem of the same style, differing Q values
/w/api.php?action=wbcheckconstraints&format=json&uselang=en&id=Qxxxxx
Stacktrace:
#0 /srv/mediawiki/php-1.31.0-wmf.5/extensions/Wikidata/extensions/Constraints/includes/ConstraintCheck/DelegatingConstraintChecker.php(577): WikibaseQuality\ConstraintReport\ConstraintCheck\Result\NullResult->getConstraint() #1 [internal function]: Closure$WikibaseQuality\ConstraintReport\ConstraintCheck\DelegatingConstraintChecker::sortResult(WikibaseQuality\ConstraintReport\ConstraintCheck\Result\CheckResult, WikibaseQuality\ConstraintReport\ConstraintCheck\Result\NullResult) #2 /srv/mediawiki/php-1.31.0-wmf.5/extensions/Wikidata/extensions/Constraints/includes/ConstraintCheck/DelegatingConstraintChecker.php(595): uasort(array, Closure$WikibaseQuality\ConstraintReport\ConstraintCheck\DelegatingConstraintChecker::sortResult;2735) #3 /srv/mediawiki/php-1.31.0-wmf.5/extensions/Wikidata/extensions/Constraints/includes/ConstraintCheck/DelegatingConstraintChecker.php(134): WikibaseQuality\ConstraintReport\ConstraintCheck\DelegatingConstraintChecker->sortResult(array) #4 /srv/mediawiki/php-1.31.0-wmf.5/extensions/Wikidata/extensions/Constraints/api/CheckConstraints.php(235): WikibaseQuality\ConstraintReport\ConstraintCheck\DelegatingConstraintChecker->checkAgainstConstraintsOnEntityId(Wikibase\DataModel\Entity\ItemId, NULL, array) #5 /srv/mediawiki/php-1.31.0-wmf.5/extensions/Wikidata/extensions/Constraints/api/CheckConstraints.php(214): WikibaseQuality\ConstraintReport\Api\CheckConstraints->checkItems(array, NULL) #6 /srv/mediawiki/php-1.31.0-wmf.5/includes/api/ApiMain.php(1582): WikibaseQuality\ConstraintReport\Api\CheckConstraints->execute() #7 /srv/mediawiki/php-1.31.0-wmf.5/includes/api/ApiMain.php(544): ApiMain->executeAction() #8 /srv/mediawiki/php-1.31.0-wmf.5/includes/api/ApiMain.php(515): ApiMain->executeActionWithErrorHandling() #9 /srv/mediawiki/php-1.31.0-wmf.5/api.php(94): ApiMain->execute() #10 /srv/mediawiki/w/api.php(3): include(string) #11 {main}