OutOfBoundsException: Term with languageCode "en" not found
Closed, ResolvedPublicPRODUCTION ERROR
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	dduvall
	Apr 15 2026, 6:27 PM

Description

Error

service.version: 1.46.0-wmf.24
timestamp: 2026-04-15T18:24:31.138Z
labels.phpversion: 8.3.30
trace.id: d99ea488-0bce-4b88-9420-c1a37815a4f6
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labels.normalized_message

[{reqId}] {exception_url}   OutOfBoundsException: Term with languageCode "en" not found

Frame	Location	Call
from	/srv/mediawiki/php-1.46.0-wmf.24/extensions/Wikibase/lib/packages/wikibase/data-model/src/Term/TermList.php(75)
#0	/srv/mediawiki/php-1.46.0-wmf.24/extensions/WikiLambda/includes/HookHandler/PageRenderingHandler.php(707)	Wikibase\DataModel\Term\TermList->getByLanguage(string)
#1	/srv/mediawiki/php-1.46.0-wmf.24/extensions/WikiLambda/includes/HookHandler/PageRenderingHandler.php(329)	MediaWiki\Extension\WikiLambda\HookHandler\PageRenderingHandler->fetchAbstractModeLabel(string, string)
#2	/srv/mediawiki/php-1.46.0-wmf.24/includes/HookContainer/HookContainer.php(135)	MediaWiki\Extension\WikiLambda\HookHandler\PageRenderingHandler->onHtmlPageLinkRendererEnd(MediaWiki\Linker\LinkRenderer, MediaWiki\Title\Title, bool, string, array, null)
#3	/srv/mediawiki/php-1.46.0-wmf.24/includes/HookContainer/HookRunner.php(2305)	MediaWiki\HookContainer\HookContainer->run(string, array)
#4	/srv/mediawiki/php-1.46.0-wmf.24/includes/Linker/LinkRenderer.php(533)	MediaWiki\HookContainer\HookRunner->onHtmlPageLinkRendererEnd(MediaWiki\Linker\LinkRenderer, MediaWiki\Title\Title, bool, string, array, null)
#5	/srv/mediawiki/php-1.46.0-wmf.24/includes/Linker/LinkRenderer.php(261)	MediaWiki\Linker\LinkRenderer->buildAElement(MediaWiki\Title\Title, string, array, bool)
#6	/srv/mediawiki/php-1.46.0-wmf.24/includes/Linker/LinkRenderer.php(306)	MediaWiki\Linker\LinkRenderer->makePreloadedLink(MediaWiki\Title\Title, string, array, array, array)
#7	/srv/mediawiki/php-1.46.0-wmf.24/includes/Linker/LinkRenderer.php(186)	MediaWiki\Linker\LinkRenderer->makeKnownLink(MediaWiki\Title\Title, null, array, array)
#8	/srv/mediawiki/php-1.46.0-wmf.24/includes/RecentChanges/ChangesList.php(636)	MediaWiki\Linker\LinkRenderer->makeLink(MediaWiki\Title\Title, null, array, array)
#9	/srv/mediawiki/php-1.46.0-wmf.24/includes/RecentChanges/OldChangesList.php(111)	MediaWiki\RecentChanges\ChangesList->getArticleLink(MediaWiki\RecentChanges\RecentChange, bool, bool)
#10	/srv/mediawiki/php-1.46.0-wmf.24/includes/RecentChanges/OldChangesList.php(44)	MediaWiki\RecentChanges\OldChangesList->formatChangeLine(MediaWiki\RecentChanges\RecentChange, array, bool)
#11	/srv/mediawiki/php-1.46.0-wmf.24/includes/Specials/SpecialRecentChanges.php(327)	MediaWiki\RecentChanges\OldChangesList->recentChangesLine(MediaWiki\RecentChanges\RecentChange, bool, int)
#12	/srv/mediawiki/php-1.46.0-wmf.24/includes/SpecialPage/ChangesListSpecialPage.php(1365)	MediaWiki\Specials\SpecialRecentChanges->outputChangesList(Wikimedia\Rdbms\MysqliResultWrapper, MediaWiki\Html\FormOptions)
#13	/srv/mediawiki/php-1.46.0-wmf.24/includes/SpecialPage/ChangesListSpecialPage.php(524)	MediaWiki\SpecialPage\ChangesListSpecialPage->webOutput(Wikimedia\Rdbms\MysqliResultWrapper, MediaWiki\Html\FormOptions)
#14	/srv/mediawiki/php-1.46.0-wmf.24/includes/Specials/SpecialRecentChanges.php(138)	MediaWiki\SpecialPage\ChangesListSpecialPage->execute(null)
#15	/srv/mediawiki/php-1.46.0-wmf.24/includes/SpecialPage/SpecialPage.php(729)	MediaWiki\Specials\SpecialRecentChanges->execute(null)
#16	/srv/mediawiki/php-1.46.0-wmf.24/includes/SpecialPage/SpecialPageFactory.php(1714)	MediaWiki\SpecialPage\SpecialPage->run(null)
#17	/srv/mediawiki/php-1.46.0-wmf.24/includes/Actions/ActionEntryPoint.php(505)	MediaWiki\SpecialPage\SpecialPageFactory->executePath(string, MediaWiki\Context\RequestContext)
#18	/srv/mediawiki/php-1.46.0-wmf.24/includes/Actions/ActionEntryPoint.php(145)	MediaWiki\Actions\ActionEntryPoint->performRequest()
#19	/srv/mediawiki/php-1.46.0-wmf.24/includes/MediaWikiEntryPoint.php(180)	MediaWiki\Actions\ActionEntryPoint->execute()
#20	/srv/mediawiki/php-1.46.0-wmf.24/index.php(44)	MediaWiki\MediaWikiEntryPoint->run()
#21	/srv/mediawiki/w/index.php(3)	require(string)
#22	{main}

Impact

A dozen or so production errors within 10 minutes of wmf.24 promotion to group1.

Notes

Noticed shortly after wmf.24 promotion to group1. Possibly related to T420254 and https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikiLambda/+/1268668 (judging from the stack trace).

Details

Request URL: https://abstract.wikipedia.org/wiki/Special:RecentChanges?days=*&hideWikibase=*&hideWikifunctions=*&hidebots=*&hidecategorization=*&limit=*&urlversion=*

Related Changes in Gerrit:

Subject	Repo	Branch	Lines +/-
PageRenderingHandler: test case for OutOfBoundsException	mediawiki/extensions/WikiLambda	master	+51 -0
PageRenderingHandler: Handle Wikibase's OutOfBoundsException for "we don't have a label"	mediawiki/extensions/WikiLambda	wmf/1.46.0-wmf.24	+7 -1
PageRenderingHandler: Handle Wikibase's OutOfBoundsException for "we don't have a label"	mediawiki/extensions/WikiLambda	master	+7 -1

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Related Objects
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		Status	Subtype	Assigned	Task
		Resolved	Release	dduvall	T420482 1.46.0-wmf.24 deployment blockers
		Resolved	PRODUCTION ERROR	Jdforrester-WMF	T423514 OutOfBoundsException: Term with languageCode "en" not found

Event Timeline

dduvall created this task.Apr 15 2026, 6:27 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptApr 15 2026, 6:27 PM

dduvall updated the task description. (Show Details)Apr 15 2026, 6:30 PM

dduvall added projects: WikiLambda, Abstract Wikipedia team.

dduvall triaged this task as Unbreak Now! priority.Apr 15 2026, 6:33 PM

dduvall added a parent task: T420482: 1.46.0-wmf.24 deployment blockers.

SomeRandomDeveloper subscribed.Apr 15 2026, 6:52 PM

Caused by the same code as T423515: MediaWiki\Extension\WikiLambda\ZObjectStore::findZLanguageFromCode: [1146] Table 'abstractwiki.wikilambda_zlanguages' doesn't exist.

Change #1271876 had a related patch set uploaded (by Jforrester; author: Jforrester):

[mediawiki/extensions/WikiLambda@master] PageRenderingHandler: Handle Wikibase's OutOfBoundsException for "we don't have a label"

https://gerrit.wikimedia.org/r/1271876

gerritbot added a project: Patch-For-Review.Apr 15 2026, 7:13 PM

Change #1271876 merged by jenkins-bot:

[mediawiki/extensions/WikiLambda@master] PageRenderingHandler: Handle Wikibase's OutOfBoundsException for "we don't have a label"

https://gerrit.wikimedia.org/r/1271876

Change #1271894 had a related patch set uploaded (by Jforrester; author: Jforrester):

[mediawiki/extensions/WikiLambda@wmf/1.46.0-wmf.24] PageRenderingHandler: Handle Wikibase's OutOfBoundsException for "we don't have a label"

https://gerrit.wikimedia.org/r/1271894

Jdforrester-WMF changed the task status from Open to In Progress.Apr 15 2026, 8:38 PM

Jdforrester-WMF claimed this task.

Jdforrester-WMF edited projects, added Essential-Work, Abstract Wikipedia team (26Q4 (Apr–Jun)); removed Abstract Wikipedia team.

Jdforrester-WMF moved this task from Incoming to Ready to deploy on the Abstract Wikipedia team (26Q4 (Apr–Jun)) board.

Change #1271894 merged by jenkins-bot:

[mediawiki/extensions/WikiLambda@wmf/1.46.0-wmf.24] PageRenderingHandler: Handle Wikibase's OutOfBoundsException for "we don't have a label"

https://gerrit.wikimedia.org/r/1271894

Change #1271914 had a related patch set uploaded (by Ecarg; author: Jforrester):

[mediawiki/extensions/WikiLambda@master] PageRenderingHandler: test case for OutOfBoundsException

https://gerrit.wikimedia.org/r/1271914

Mentioned in SAL (#wikimedia-operations) [2026-04-15T20:52:01Z] <jforrester@deploy1003> Started scap sync-world: Backport for [[gerrit:1271894|PageRenderingHandler: Handle Wikibase's OutOfBoundsException for "we don't have a label" (T423514)]], [[gerrit:1271905|PageRenderingHandler: Don't run repo-mode stuff in non-repo world (T423515)]]

Mentioned in SAL (#wikimedia-operations) [2026-04-15T20:53:57Z] <jforrester@deploy1003> jforrester: Backport for [[gerrit:1271894|PageRenderingHandler: Handle Wikibase's OutOfBoundsException for "we don't have a label" (T423514)]], [[gerrit:1271905|PageRenderingHandler: Don't run repo-mode stuff in non-repo world (T423515)]] synced to the testservers (see https://wikitech.wikimedia.org/wiki/Mwdebug). Changes can now be verified there.

Mentioned in SAL (#wikimedia-operations) [2026-04-15T20:58:10Z] <jforrester@deploy1003> Finished scap sync-world: Backport for [[gerrit:1271894|PageRenderingHandler: Handle Wikibase's OutOfBoundsException for "we don't have a label" (T423514)]], [[gerrit:1271905|PageRenderingHandler: Don't run repo-mode stuff in non-repo world (T423515)]] (duration: 06m 08s)