Fatal exception of type Wikibase\Lib\Store\RevisionedUnresolvedRedirectException
Open, Needs TriagePublicPRODUCTION ERROR
Actions

Assigned To

None

Authored By

	Epidosis
	Jun 18 2026, 7:35 PM

Project Tags

Referenced Files

None

Subscribers

• Lucas_Werkmeister_WMDE

Tymewalk

Description

As of now, trying to load https://www.wikidata.org/w/index.php?title=Q112371485&redirect=no, I obtain the following message:

MediaWiki internal error.
Original exception: [c61af503-2950-4ad8-8e9c-9f6b699a047f] 2026-06-18 19:32:21: Fatal exception of type "Wikibase\Lib\Store\RevisionedUnresolvedRedirectException"
Exception caught inside exception handler.
Set $wgShowExceptionDetails = true; at the bottom of LocalSettings.php to show detailed debugging information.

I have trying to reload multiple times, I get the same error; same also trying to load the page history. I think T228293 is related and I see tickets for similar cases: T385599 T387635 T388842 T291215 T283862

Error

mwversion: 1.47.0-wmf.7
timestamp: 2026-06-18T19:32:21.056Z
phpversion: 8.3.31
reqId: c61af503-2950-4ad8-8e9c-9f6b699a047f
Find reqId in Logstash

normalized_message

[{reqId}] {exception_url}   Wikibase\Lib\Store\RevisionedUnresolvedRedirectException: Unresolved redirect from Q97064860 to Q5290682

Frame	Location	Call
from	/srv/mediawiki/php-1.47.0-wmf.7/extensions/Wikibase/lib/includes/Store/Sql/WikiPageEntityRevisionLookup.php(117)
#0	/srv/mediawiki/php-1.47.0-wmf.7/extensions/Wikibase/lib/includes/Store/TypeDispatchingEntityRevisionLookup.php(51)	Wikibase\Lib\Store\Sql\WikiPageEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, int, string)
#1	/srv/mediawiki/php-1.47.0-wmf.7/extensions/Wikibase/data-access/src/ByTypeDispatchingEntityRevisionLookup.php(55)	Wikibase\Lib\Store\TypeDispatchingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, int, string)
#2	/srv/mediawiki/php-1.47.0-wmf.7/extensions/Wikibase/lib/includes/Store/TypeDispatchingEntityRevisionLookup.php(51)	Wikibase\DataAccess\ByTypeDispatchingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, int, string)
#3	/srv/mediawiki/php-1.47.0-wmf.7/extensions/Wikibase/lib/includes/Store/CachingEntityRevisionLookup.php(99)	Wikibase\Lib\Store\TypeDispatchingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, int, string)
#4	/srv/mediawiki/php-1.47.0-wmf.7/extensions/Wikibase/lib/includes/Store/CachingEntityRevisionLookup.php(85)	Wikibase\Lib\Store\CachingEntityRevisionLookup->fetchEntityRevision(Wikibase\DataModel\Entity\ItemId, int, string)
#5	/srv/mediawiki/php-1.47.0-wmf.7/extensions/Wikibase/lib/includes/Store/CachingEntityRevisionLookup.php(99)	Wikibase\Lib\Store\CachingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, int, string)
#6	/srv/mediawiki/php-1.47.0-wmf.7/extensions/Wikibase/lib/includes/Store/CachingEntityRevisionLookup.php(85)	Wikibase\Lib\Store\CachingEntityRevisionLookup->fetchEntityRevision(Wikibase\DataModel\Entity\ItemId, int, string)
#7	/srv/mediawiki/php-1.47.0-wmf.7/extensions/Wikibase/lib/includes/Store/RevisionBasedEntityLookup.php(46)	Wikibase\Lib\Store\CachingEntityRevisionLookup->getEntityRevision(Wikibase\DataModel\Entity\ItemId, int, string)
#8	/srv/mediawiki/php-1.47.0-wmf.7/extensions/Wikibase/lib/packages/wikibase/data-model-services/src/Lookup/RedirectResolvingEntityLookup.php(53)	Wikibase\Lib\Store\RevisionBasedEntityLookup->getEntity(Wikibase\DataModel\Entity\ItemId)
#9	/srv/mediawiki/php-1.47.0-wmf.7/extensions/Wikibase/repo/includes/Hooks/SidebarBeforeOutputHookHandler.php(116)	Wikibase\DataModel\Services\Lookup\RedirectResolvingEntityLookup->getEntity(Wikibase\DataModel\Entity\ItemId)
#10	/srv/mediawiki/php-1.47.0-wmf.7/extensions/Wikibase/repo/includes/Hooks/SidebarBeforeOutputHookHandler.php(83)	Wikibase\Repo\Hooks\SidebarBeforeOutputHookHandler->addWikiProjectLinks(MediaWiki\Skins\Vector\SkinVectorLegacy, array, Wikibase\DataModel\Entity\ItemId)
#11	/srv/mediawiki/php-1.47.0-wmf.7/includes/HookContainer/HookContainer.php(127)	Wikibase\Repo\Hooks\SidebarBeforeOutputHookHandler->onSidebarBeforeOutput(MediaWiki\Skins\Vector\SkinVectorLegacy, array)
#12	/srv/mediawiki/php-1.47.0-wmf.7/includes/HookContainer/HookRunner.php(3971)	MediaWiki\HookContainer\HookContainer->run(string, array, array)
#13	/srv/mediawiki/php-1.47.0-wmf.7/includes/Skin/Skin.php(1552)	MediaWiki\HookContainer\HookRunner->onSidebarBeforeOutput(MediaWiki\Skins\Vector\SkinVectorLegacy, array)
#14	/srv/mediawiki/php-1.47.0-wmf.7/includes/Skin/SkinTemplate.php(655)	MediaWiki\Skin\Skin->buildSidebar()
#15	/srv/mediawiki/php-1.47.0-wmf.7/includes/Skin/SkinTemplate.php(180)	MediaWiki\Skin\SkinTemplate->getPortletsTemplateData()
#16	/srv/mediawiki/php-1.47.0-wmf.7/includes/Skin/SkinMustache.php(87)	MediaWiki\Skin\SkinTemplate->getTemplateData()
#17	/srv/mediawiki/php-1.47.0-wmf.7/skins/Vector/includes/SkinVectorLegacy.php(202)	MediaWiki\Skin\SkinMustache->getTemplateData()
#18	/srv/mediawiki/php-1.47.0-wmf.7/includes/Skin/SkinMustache.php(51)	MediaWiki\Skins\Vector\SkinVectorLegacy->getTemplateData()
#19	/srv/mediawiki/php-1.47.0-wmf.7/includes/Skin/SkinTemplate.php(173)	MediaWiki\Skin\SkinMustache->generateHTML()
#20	/srv/mediawiki/php-1.47.0-wmf.7/includes/Skin/Skin.php(681)	MediaWiki\Skin\SkinTemplate->outputPage()
#21	/srv/mediawiki/php-1.47.0-wmf.7/includes/Output/OutputPage.php(3313)	MediaWiki\Skin\Skin->outputPageFinal(MediaWiki\Output\OutputPage)
#22	/srv/mediawiki/php-1.47.0-wmf.7/includes/Actions/ActionEntryPoint.php(162)	MediaWiki\Output\OutputPage->output(bool)
#23	/srv/mediawiki/php-1.47.0-wmf.7/includes/MediaWikiEntryPoint.php(180)	MediaWiki\Actions\ActionEntryPoint->execute()
#24	/srv/mediawiki/php-1.47.0-wmf.7/index.php(44)	MediaWiki\MediaWikiEntryPoint->run()
#25	/srv/mediawiki/w/index.php(3)	require(string)
#26	{main}

Impact

Notes

Details

Request URL: https://www.wikidata.org/w/index.php?redirect=no&title=Q112371485

Related Changes in Gerrit:

	Subject	Author	Repo	Branch	Lines +/-
	Catch EntityLookupException in addWikiProjectLinks	HakanIST	mediawiki/extensions/Wikibase	master	+64 -1

Customize query in gerrit

Related Objects
Search...

Status	Subtype	Assigned	Task
Open		None	T329284 Make Wikiprojects on Wikidata more visible and accessible
Open		None	T420907 [WIPR] POC Making WikiProjects for Wikidata links more visible
Open	PRODUCTION ERROR	None	T429645 Fatal exception of type Wikibase\Lib\Store\RevisionedUnresolvedRedirectException

Event Timeline

Epidosis created this task.Jun 18 2026, 7:35 PM

Restricted Application changed the subtype of this task from "Task" to "Production Error". · View Herald TranscriptJun 18 2026, 7:35 PM

Restricted Application added a subscriber: Aklapper. · View Herald Transcript

The stack trace indicates this is related to our WikiProjects work (SidebarBeforeOutputHookHandler::addWikiProjectLinks() calling RedirectResolvingEntityLookup::getEntity()).

• Lucas_Werkmeister_WMDE added a parent task: T420907: [WIPR] POC Making WikiProjects for Wikidata links more visible.Jun 19 2026, 9:06 AM

• Lucas_Werkmeister_WMDE set Request URL to https://www.wikidata.org/w/index.php?redirect=no&title=Q112371485.

• Lucas_Werkmeister_WMDE updated the task description. (Show Details)

Same problem: Q131775592 after a merge. It's possible that both items had the same label + the same description.

• thcipriani moved this task from Untriaged to Apr–Jun 2026 on the Wikimedia-production-error board.Jul 2 2026, 3:29 PM

• Lucas_Werkmeister_WMDE merged a task: T431075: "Wikibase\Lib\Store\RevisionedUnresolvedRedirectException" is thrown when visiting a page which is a double redirect.Jul 3 2026, 9:02 AM

• Lucas_Werkmeister_WMDE added subscribers: Tymewalk, HakanIST.

Change #1307460 had a related patch set uploaded (by HakanIST; author: HakanIST):

[mediawiki/extensions/Wikibase@master] Make RedirectResolvingEntityLookup follow redirect chains

https://gerrit.wikimedia.org/r/1307460

gerritbot added a project: Patch-For-Review.Jul 3 2026, 2:47 PM

karapayneWMDE moved this task from Incoming to Ready for Task Time (Story Writing) on the Wikidata-Omega board.Fri, Jul 10, 2:47 PM

Fatal exception of type Wikibase\Lib\Store\RevisionedUnresolvedRedirectExceptionOpen, Needs TriagePublicPRODUCTION ERRORActions