PHP Warning: preg_match(): Delimiter must not be alphanumeric, backslash, or NUL
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Authored By

	aaron
	Dec 19 2025, 5:30 PM

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aaron

AbdulazizAlwafaee

Aklapper

Description

Error

service.version: 1.46.0-wmf.5
timestamp: 2025-12-17T18:32:52.267Z
labels.phpversion: 8.3.26
trace.id: d2868895-1eed-46ab-83dd-2cb63c249775
Find trace.id in Logstash

labels.normalized_message

[{reqId}] {exception_url}   PHP Warning: preg_match(): Delimiter must not be alphanumeric, backslash, or NUL

Frame	Location	Call
from	/srv/mediawiki/php-1.46.0-wmf.5/extensions/Wikibase/lib/packages/wikibase/data-model/src/Entity/DispatchingEntityIdParser.php(47)
#0	[internal function]	MediaWiki\Exception\MWExceptionHandler::handleError(int, string, string, int)
#1	/srv/mediawiki/php-1.46.0-wmf.5/extensions/Wikibase/lib/packages/wikibase/data-model/src/Entity/DispatchingEntityIdParser.php(47)	preg_match(string, string)
#2	/srv/mediawiki/php-1.46.0-wmf.5/extensions/Wikibase/client/includes/Usage/EntityUsageFactory.php(38)	Wikibase\DataModel\Entity\DispatchingEntityIdParser->parse(string)
#3	/srv/mediawiki/php-1.46.0-wmf.5/extensions/Wikibase/client/includes/Usage/ParserOutputUsageAccumulator.php(58)	Wikibase\Client\Usage\EntityUsageFactory->newFromIdentity(string)
#4	/srv/mediawiki/php-1.46.0-wmf.5/extensions/Wikibase/client/includes/Usage/RedirectTrackingUsageAccumulator.php(65)	Wikibase\Client\Usage\ParserOutputUsageAccumulator->getUsages()
#5	/srv/mediawiki/php-1.46.0-wmf.5/extensions/Wikibase/client/includes/Hooks/DataUpdateHookHandler.php(176)	Wikibase\Client\Usage\RedirectTrackingUsageAccumulator->getUsages()
#6	/srv/mediawiki/php-1.46.0-wmf.5/includes/Deferred/MWCallableUpdate.php(52)	Wikibase\Client\Hooks\DataUpdateHookHandler->Wikibase\Client\Hooks\{closure}(string)
#7	/srv/mediawiki/php-1.46.0-wmf.5/includes/Deferred/DeferredUpdates.php(445)	MediaWiki\Deferred\MWCallableUpdate->doUpdate()
#8	/srv/mediawiki/php-1.46.0-wmf.5/includes/Deferred/DeferredUpdates.php(187)	MediaWiki\Deferred\DeferredUpdates::attemptUpdate(MediaWiki\Deferred\MWCallableUpdate)
#9	/srv/mediawiki/php-1.46.0-wmf.5/includes/Deferred/DeferredUpdates.php(274)	MediaWiki\Deferred\DeferredUpdates::run(MediaWiki\Deferred\MWCallableUpdate)
#10	/srv/mediawiki/php-1.46.0-wmf.5/includes/Deferred/DeferredUpdatesScope.php(229)	MediaWiki\Deferred\DeferredUpdates::MediaWiki\Deferred\{closure}(MediaWiki\Deferred\MWCallableUpdate, int)
#11	/srv/mediawiki/php-1.46.0-wmf.5/includes/Deferred/DeferredUpdatesScope.php(158)	MediaWiki\Deferred\DeferredUpdatesScope->processStageQueue(int, int, Closure)
#12	/srv/mediawiki/php-1.46.0-wmf.5/includes/Deferred/DeferredUpdates.php(268)	MediaWiki\Deferred\DeferredUpdatesScope->processUpdates(int, Closure)
#13	/srv/mediawiki/php-1.46.0-wmf.5/includes/MediaWikiEntryPoint.php(656)	MediaWiki\Deferred\DeferredUpdates::doUpdates()
#14	/srv/mediawiki/php-1.46.0-wmf.5/includes/MediaWikiEntryPoint.php(478)	MediaWiki\MediaWikiEntryPoint->restInPeace()
#15	/srv/mediawiki/php-1.46.0-wmf.5/includes/MediaWikiEntryPoint.php(436)	MediaWiki\MediaWikiEntryPoint->doPostOutputShutdown()
#16	/srv/mediawiki/php-1.46.0-wmf.5/includes/MediaWikiEntryPoint.php(193)	MediaWiki\MediaWikiEntryPoint->postOutputShutdown()
#17	/srv/mediawiki/php-1.46.0-wmf.5/api.php(30)	MediaWiki\MediaWikiEntryPoint->run()
#18	/srv/mediawiki/w/api.php(3)	require(string)
#19	{main}

Impact

~115 in the last day.

Notes

Details

Request URL: https://commons.wikimedia.org/w/api.php?action=query&aiend=*&ailimit=*&aiprop=*&aisort=*&aistart=*&format=*&list=*

Event Timeline

aaron created this task.Dec 19 2025, 5:30 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptDec 19 2025, 5:30 PM

thcipriani moved this task from Untriaged to Oct-Dec 2025 on the Wikimedia-production-error board.Jan 15 2026, 5:52 PM

PHP Warning: preg_match(): Delimiter must not be alphanumeric, backslash, or NUL in /extensions/TemplateStyles/includes/TemplateStylesMatcherFactory.php on line 56

during

php maintenance/run.php runJobs --procs 12 --maxjobs 5000 --nothrottle --wait

Mediawiki 1.43.7
PHP 8.3.30 (fpm-fcgi)
10.6.22-MariaDB-0ubuntu0.22.04.1

PHP Warning: preg_match(): Delimiter must not be alphanumeric, backslash, or NULOpen, Needs TriagePublicPRODUCTION ERRORActions