We turned of client-side features for Lexemes for now but seem to have missed a part. (See T195611 for the fallout.)
The problem: someone added a statement to an item that was used on Wikipedia. This statement linked to a Lexeme. This lead to internal errors when viewing the page.
We need to figure out a more graceful way of handling links to Lexemes (and Forms?) in statements that are used on the clien
Current stacktrace:
2018-05-25 18:12:37 [WwhSEwpAICMAALKnaggAAABH] mw1333 frwiki 1.32.0-wmf.4 exception ERROR: [WwhSEwpAICMAALKnaggAAABH] /wiki/Cracovie Wikibase\DataModel\Services\Lookup\EntityLookupException from line 44 of /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/lib/includes/Store/RevisionBasedEntityLookup.php: The serialization "L1041" is not recognized by the configured id builders {"exception_id":"WwhSEwpAICMAALKnaggAAABH","exception_url":"/wiki/Cracovie","caught_by":"mwe_handler"} [Exception Wikibase\DataModel\Services\Lookup\EntityLookupException] (/srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/lib/includes/Store/RevisionBasedEntityLookup.php:44) The serialization "L1041" is not recognized by the configured id builders #0 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-services/src/Lookup/RedirectResolvingEntityLookup.php(51): Wikibase\Lib\Store\RevisionBasedEntityLookup->getEntity(Wikibase\DataModel\Entity\ItemId) #1 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/client/includes/LangLinkHandler.php(109): Wikibase\DataModel\Services\Lookup\RedirectResolvingEntityLookup->getEntity(Wikibase\DataModel\Entity\ItemId) #2 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/client/includes/LangLinkHandler.php(331): Wikibase\Client\LangLinkHandler->getEntityLinks(Title) #3 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/client/includes/LangLinkHandler.php(352): Wikibase\Client\LangLinkHandler->getEffectiveRepoLinks(Title, ParserOutput) #4 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/client/includes/Hooks/ParserOutputUpdateHookHandlers.php(97): Wikibase\Client\LangLinkHandler->addLinksFromRepository(Title, ParserOutput) #5 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/client/includes/Hooks/ParserOutputUpdateHookHandlers.php(65): Wikibase\Client\Hooks\ParserOutputUpdateHookHandlers->doContentAlterParserOutput(Title, ParserOutput) #6 /srv/mediawiki/php-1.32.0-wmf.4/includes/Hooks.php(177): Wikibase\Client\Hooks\ParserOutputUpdateHookHandlers::onContentAlterParserOutput(WikitextContent, Title, ParserOutput) #7 /srv/mediawiki/php-1.32.0-wmf.4/includes/Hooks.php(205): Hooks::callHook(string, array, array, NULL) #8 /srv/mediawiki/php-1.32.0-wmf.4/includes/content/AbstractContent.php(520): Hooks::run(string, array) #9 /srv/mediawiki/php-1.32.0-wmf.4/includes/poolcounter/PoolWorkArticleView.php(145): AbstractContent->getParserOutput(Title, integer, ParserOptions) #10 /srv/mediawiki/php-1.32.0-wmf.4/includes/poolcounter/PoolCounterWork.php(123): PoolWorkArticleView->doWork() #11 /srv/mediawiki/php-1.32.0-wmf.4/includes/page/Article.php(604): PoolCounterWork->execute() #12 /srv/mediawiki/php-1.32.0-wmf.4/includes/actions/ViewAction.php(68): Article->view() #13 /srv/mediawiki/php-1.32.0-wmf.4/includes/MediaWiki.php(500): ViewAction->show() #14 /srv/mediawiki/php-1.32.0-wmf.4/includes/MediaWiki.php(294): MediaWiki->performAction(Article, Title) #15 /srv/mediawiki/php-1.32.0-wmf.4/includes/MediaWiki.php(861): MediaWiki->performRequest() #16 /srv/mediawiki/php-1.32.0-wmf.4/includes/MediaWiki.php(524): MediaWiki->main() #17 /srv/mediawiki/php-1.32.0-wmf.4/index.php(42): MediaWiki->run() #18 /srv/mediawiki/w/index.php(3): include(string) #19 {main} Caused by: [Exception Wikibase\DataModel\Entity\EntityIdParsingException] (/srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model/src/Entity/DispatchingEntityIdParser.php:60) The serialization "L1041" is not recognized by the configured id builders #0 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-services/src/EntityId/PrefixMappingEntityIdParser.php(86): Wikibase\DataModel\Entity\DispatchingEntityIdParser->parse(string) #1 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/lib/includes/Serialization/RepositorySpecificDataValueDeserializerFactory.php(70): Wikibase\DataModel\Services\EntityId\PrefixMappingEntityIdParser->parse(string) #2 /srv/mediawiki/php-1.32.0-wmf.4/vendor/data-values/serialization/src/Deserializers/DataValueDeserializer.php(122): Closure$Wikibase\Lib\Serialization\RepositorySpecificDataValueDeserializerFactory::newDeserializerForRepository(array) #3 /srv/mediawiki/php-1.32.0-wmf.4/vendor/data-values/serialization/src/Deserializers/DataValueDeserializer.php(91): DataValues\Deserializers\DataValueDeserializer->getDeserialization(array) #4 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/SnakDeserializer.php(118): DataValues\Deserializers\DataValueDeserializer->deserialize(array) #5 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/SnakDeserializer.php(108): Wikibase\DataModel\Deserializers\SnakDeserializer->deserializeDataValue(array) #6 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/SnakDeserializer.php(90): Wikibase\DataModel\Deserializers\SnakDeserializer->newValueSnak(array) #7 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/SnakDeserializer.php(72): Wikibase\DataModel\Deserializers\SnakDeserializer->getDeserialized(array) #8 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/SnakListDeserializer.php(60): Wikibase\DataModel\Deserializers\SnakDeserializer->deserialize(array) #9 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/SnakListDeserializer.php(41): Wikibase\DataModel\Deserializers\SnakListDeserializer->getDeserialized(array) #10 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/StatementDeserializer.php(140): Wikibase\DataModel\Deserializers\SnakListDeserializer->deserialize(array) #11 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/StatementDeserializer.php(118): Wikibase\DataModel\Deserializers\StatementDeserializer->setQualifiersFromSerialization(array, Wikibase\DataModel\Statement\Statement) #12 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/StatementDeserializer.php(100): Wikibase\DataModel\Deserializers\StatementDeserializer->getDeserialized(array) #13 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/StatementListDeserializer.php(60): Wikibase\DataModel\Deserializers\StatementDeserializer->deserialize(array) #14 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/StatementListDeserializer.php(41): Wikibase\DataModel\Deserializers\StatementListDeserializer->getDeserialized(array) #15 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/ItemDeserializer.php(130): Wikibase\DataModel\Deserializers\StatementListDeserializer->deserialize(array) #16 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/ItemDeserializer.php(85): Wikibase\DataModel\Deserializers\ItemDeserializer->setStatementListFromSerialization(array, Wikibase\DataModel\Entity\Item) #17 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-serialization/src/Deserializers/ItemDeserializer.php(77): Wikibase\DataModel\Deserializers\ItemDeserializer->getDeserialized(array) #18 /srv/mediawiki/php-1.32.0-wmf.4/vendor/serialization/serialization/src/Deserializers/DispatchingDeserializer.php(42): Wikibase\DataModel\Deserializers\ItemDeserializer->deserialize(array) #19 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/internal-serialization/src/Deserializers/EntityDeserializer.php(47): Deserializers\DispatchingDeserializer->deserialize(array) #20 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/lib/includes/Store/EntityContentDataCodec.php(252): Wikibase\InternalSerialization\Deserializers\EntityDeserializer->deserialize(array) #21 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/lib/includes/Store/Sql/WikiPageEntityRevisionLookup.php(163): Wikibase\Lib\Store\EntityContentDataCodec->decodeEntity(string, NULL) #22 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/lib/includes/Store/Sql/WikiPageEntityRevisionLookup.php(92): Wikibase\Lib\Store\Sql\WikiPageEntityRevisionLookup->loadEntity(stdClass) #23 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/lib/includes/Store/DispatchingEntityRevisionLookup.php(59): Wikibase\Lib\Store\Sql\WikiPageEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, integer, string) #24 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/lib/includes/Store/CachingEntityRevisionLookup.php(104): Wikibase\Lib\Store\DispatchingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, integer, string) #25 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/lib/includes/Store/CachingEntityRevisionLookup.php(87): Wikibase\Lib\Store\CachingEntityRevisionLookup->fetchEntityRevision(Wikibase\DataModel\Entity\ItemId, integer, string) #26 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/lib/includes/Store/CachingEntityRevisionLookup.php(104): Wikibase\Lib\Store\CachingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, integer, string) #27 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/lib/includes/Store/CachingEntityRevisionLookup.php(87): Wikibase\Lib\Store\CachingEntityRevisionLookup->fetchEntityRevision(Wikibase\DataModel\Entity\ItemId, integer, string) #28 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/lib/includes/Store/RevisionBasedEntityLookup.php(39): Wikibase\Lib\Store\CachingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId) #29 /srv/mediawiki/php-1.32.0-wmf.4/vendor/wikibase/data-model-services/src/Lookup/RedirectResolvingEntityLookup.php(51): Wikibase\Lib\Store\RevisionBasedEntityLookup->getEntity(Wikibase\DataModel\Entity\ItemId) #30 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/client/includes/LangLinkHandler.php(109): Wikibase\DataModel\Services\Lookup\RedirectResolvingEntityLookup->getEntity(Wikibase\DataModel\Entity\ItemId) #31 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/client/includes/LangLinkHandler.php(331): Wikibase\Client\LangLinkHandler->getEntityLinks(Title) #32 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/client/includes/LangLinkHandler.php(352): Wikibase\Client\LangLinkHandler->getEffectiveRepoLinks(Title, ParserOutput) #33 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/client/includes/Hooks/ParserOutputUpdateHookHandlers.php(97): Wikibase\Client\LangLinkHandler->addLinksFromRepository(Title, ParserOutput) #34 /srv/mediawiki/php-1.32.0-wmf.4/extensions/Wikibase/client/includes/Hooks/ParserOutputUpdateHookHandlers.php(65): Wikibase\Client\Hooks\ParserOutputUpdateHookHandlers->doContentAlterParserOutput(Title, ParserOutput) #35 /srv/mediawiki/php-1.32.0-wmf.4/includes/Hooks.php(177): Wikibase\Client\Hooks\ParserOutputUpdateHookHandlers::onContentAlterParserOutput(WikitextContent, Title, ParserOutput) #36 /srv/mediawiki/php-1.32.0-wmf.4/includes/Hooks.php(205): Hooks::callHook(string, array, array, NULL) #37 /srv/mediawiki/php-1.32.0-wmf.4/includes/content/AbstractContent.php(520): Hooks::run(string, array) #38 /srv/mediawiki/php-1.32.0-wmf.4/includes/poolcounter/PoolWorkArticleView.php(145): AbstractContent->getParserOutput(Title, integer, ParserOptions) #39 /srv/mediawiki/php-1.32.0-wmf.4/includes/poolcounter/PoolCounterWork.php(123): PoolWorkArticleView->doWork() #40 /srv/mediawiki/php-1.32.0-wmf.4/includes/page/Article.php(604): PoolCounterWork->execute() #41 /srv/mediawiki/php-1.32.0-wmf.4/includes/actions/ViewAction.php(68): Article->view() #42 /srv/mediawiki/php-1.32.0-wmf.4/includes/MediaWiki.php(500): ViewAction->show() #43 /srv/mediawiki/php-1.32.0-wmf.4/includes/MediaWiki.php(294): MediaWiki->performAction(Article, Title) #44 /srv/mediawiki/php-1.32.0-wmf.4/includes/MediaWiki.php(861): MediaWiki->performRequest() #45 /srv/mediawiki/php-1.32.0-wmf.4/includes/MediaWiki.php(524): MediaWiki->main() #46 /srv/mediawiki/php-1.32.0-wmf.4/index.php(42): MediaWiki->run() #47 /srv/mediawiki/w/index.php(3): include(string) #48 {main}