When I go to https://www.wikidata.org/wiki/Q2?action=constraintsrdf, I get 500 status code. Logstash shows:
Unknown ViolationMessage argument type p!
```
#0 /srv/mediawiki/php-1.32.0-wmf.8/extensions/WikibaseQualityConstraints/src/ConstraintCheck/Message/ViolationMessageDeserializer.php(58): WikibaseQuality\ConstraintReport\ConstraintCheck\Message\ViolationMessageDeserializer->deserializeArgument(WikibaseQuality\ConstraintReport\ConstraintCheck\Message\ViolationMessage, array)
#1 /srv/mediawiki/php-1.32.0-wmf.8/extensions/WikibaseQualityConstraints/src/ConstraintCheck/Result/CheckResultDeserializer.php(109): WikibaseQuality\ConstraintReport\ConstraintCheck\Message\ViolationMessageDeserializer->deserialize(array)
#2 /srv/mediawiki/php-1.32.0-wmf.8/extensions/WikibaseQualityConstraints/src/ConstraintCheck/Result/CheckResultDeserializer.php(76): WikibaseQuality\ConstraintReport\ConstraintCheck\Result\CheckResultDeserializer->getViolationMessageFromSerialization(array)
#3 /srv/mediawiki/php-1.32.0-wmf.8/extensions/WikibaseQualityConstraints/src/Api/CachingResultsSource.php(421): WikibaseQuality\ConstraintReport\ConstraintCheck\Result\CheckResultDeserializer->deserialize(array)
#4 /srv/mediawiki/php-1.32.0-wmf.8/extensions/WikibaseQualityConstraints/src/Api/CachingResultsSource.php(351): WikibaseQuality\ConstraintReport\Api\CachingResultsSource->deserializeCheckResult(array, WikibaseQuality\ConstraintReport\ConstraintCheck\Cache\CachingMetadata)
#5 /srv/mediawiki/php-1.32.0-wmf.8/extensions/WikibaseQualityConstraints/src/Api/CheckConstraintsRdf.php(112): WikibaseQuality\ConstraintReport\Api\CachingResultsSource->getStoredResults(Wikibase\DataModel\Entity\ItemId)
#6 /srv/mediawiki/php-1.32.0-wmf.8/includes/actions/FormlessAction.php(43): WikibaseQuality\ConstraintReport\Api\CheckConstraintsRdf->onView()
#7 /srv/mediawiki/php-1.32.0-wmf.8/includes/MediaWiki.php(500): FormlessAction->show()
#8 /srv/mediawiki/php-1.32.0-wmf.8/includes/MediaWiki.php(294): MediaWiki->performAction(Article, Title)
#9 /srv/mediawiki/php-1.32.0-wmf.8/includes/MediaWiki.php(864): MediaWiki->performRequest()
#10 /srv/mediawiki/php-1.32.0-wmf.8/includes/MediaWiki.php(524): MediaWiki->main()
#11 /srv/mediawiki/php-1.32.0-wmf.8/index.php(42): MediaWiki->run()
#12 /srv/mediawiki/w/index.php(3): include(string)
#13 {main}
```