PHP Warning: Trying to access array offset on null
Closed, ResolvedPublicPRODUCTION ERROR
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	Aklapper
	Wed, May 13, 6:04 PM

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Error

service.version: 1.47.0-wmf.2
timestamp: 2026-05-13T17:49:55.055Z
labels.phpversion: 8.3.30
trace.id: 4b755b41-8ae7-4d1e-b1b6-de400b5806c3
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labels.normalized_message

[{reqId}] {exception_url}   PHP Warning: Trying to access array offset on null

Frame	Location	Call
from	/srv/mediawiki/php-1.47.0-wmf.2/extensions/WikiLambda/includes/HookHandler/PageRenderingHandler.php(151)
#0	/srv/mediawiki/php-1.47.0-wmf.2/extensions/WikiLambda/includes/HookHandler/PageRenderingHandler.php(151)	MediaWiki\Exception\MWExceptionHandler::handleError(int, string, string, int)
#1	/srv/mediawiki/php-1.47.0-wmf.2/includes/HookContainer/HookContainer.php(127)	MediaWiki\Extension\WikiLambda\HookHandler\PageRenderingHandler->onSkinTemplateNavigation__Universal(MediaWiki\Skins\Vector\SkinVector22, array)
#2	/srv/mediawiki/php-1.47.0-wmf.2/includes/HookContainer/HookRunner.php(4058)	MediaWiki\HookContainer\HookContainer->run(string, array, array)
#3	/srv/mediawiki/php-1.47.0-wmf.2/includes/Skin/SkinTemplate.php(1022)	MediaWiki\HookContainer\HookRunner->onSkinTemplateNavigation__Universal(MediaWiki\Skins\Vector\SkinVector22, array)
#4	/srv/mediawiki/php-1.47.0-wmf.2/skins/Vector/includes/SkinVector22.php(54)	MediaWiki\Skin\SkinTemplate->runOnSkinTemplateNavigationHooks(MediaWiki\Skins\Vector\SkinVector22, array)
#5	/srv/mediawiki/php-1.47.0-wmf.2/includes/Skin/SkinTemplate.php(1444)	MediaWiki\Skins\Vector\SkinVector22->runOnSkinTemplateNavigationHooks(MediaWiki\Skins\Vector\SkinVector22, array)
#6	/srv/mediawiki/php-1.47.0-wmf.2/includes/Skin/SkinTemplate.php(632)	MediaWiki\Skin\SkinTemplate->buildContentNavigationUrlsInternal()
#7	/srv/mediawiki/php-1.47.0-wmf.2/includes/Skin/SkinTemplate.php(179)	MediaWiki\Skin\SkinTemplate->getPortletsTemplateData()
#8	/srv/mediawiki/php-1.47.0-wmf.2/includes/Skin/SkinMustache.php(87)	MediaWiki\Skin\SkinTemplate->getTemplateData()
#9	/srv/mediawiki/php-1.47.0-wmf.2/skins/Vector/includes/SkinVector22.php(333)	MediaWiki\Skin\SkinMustache->getTemplateData()
#10	/srv/mediawiki/php-1.47.0-wmf.2/includes/Skin/SkinMustache.php(51)	MediaWiki\Skins\Vector\SkinVector22->getTemplateData()
#11	/srv/mediawiki/php-1.47.0-wmf.2/includes/Skin/SkinTemplate.php(172)	MediaWiki\Skin\SkinMustache->generateHTML()
#12	/srv/mediawiki/php-1.47.0-wmf.2/includes/Skin/Skin.php(669)	MediaWiki\Skin\SkinTemplate->outputPage()
#13	/srv/mediawiki/php-1.47.0-wmf.2/includes/Output/OutputPage.php(3311)	MediaWiki\Skin\Skin->outputPageFinal(MediaWiki\Output\OutputPage)
#14	/srv/mediawiki/php-1.47.0-wmf.2/includes/Exception/MWExceptionRenderer.php(183)	MediaWiki\Output\OutputPage->output()
#15	/srv/mediawiki/php-1.47.0-wmf.2/includes/Exception/MWExceptionRenderer.php(101)	MediaWiki\Exception\MWExceptionRenderer::reportHTML(TypeError)
#16	/srv/mediawiki/php-1.47.0-wmf.2/includes/Exception/MWExceptionHandler.php(123)	MediaWiki\Exception\MWExceptionRenderer::output(TypeError, int)
#17	/srv/mediawiki/php-1.47.0-wmf.2/includes/Exception/MWExceptionHandler.php(224)	MediaWiki\Exception\MWExceptionHandler::report(TypeError)
#18	/srv/mediawiki/php-1.47.0-wmf.2/includes/MediaWikiEntryPoint.php(200)	MediaWiki\Exception\MWExceptionHandler::handleException(TypeError, string)
#19	/srv/mediawiki/php-1.47.0-wmf.2/includes/Actions/ActionEntryPoint.php(81)	MediaWiki\MediaWikiEntryPoint->handleTopLevelError(TypeError)
#20	/srv/mediawiki/php-1.47.0-wmf.2/includes/MediaWikiEntryPoint.php(186)	MediaWiki\Actions\ActionEntryPoint->handleTopLevelError(TypeError)
#21	/srv/mediawiki/php-1.47.0-wmf.2/index.php(44)	MediaWiki\MediaWikiEntryPoint->run()
#22	/srv/mediawiki/w/index.php(3)	require(string)
#23	{main}

Impact

Low, two occurrences.

Notes

Details

Request URL: https://www.wikifunctions.org/wiki/Z27927?action=history&uselang=en

Related Changes in Gerrit:

	Subject	Repo	Branch	Lines +/-
	PageRenderingHandler: Skip null-shaped nav entries when rewriting hrefs	mediawiki/extensions/WikiLambda	master	+99 -22
	PageRenderingHandler: Don't explode if the user somehow doesn't have a history tab	mediawiki/extensions/WikiLambda	master	+8 -5

Customize query in gerrit

Related Objects

Mentioned In: T426296: TypeError: MediaWiki\Extension\WikiLambda\HookHandler\PageRenderingHandler::appendOrReplaceQueryParams(): Argument #1 ($url) must be of type string, null given, called in WikiLambda/includes/HookHandler/PageRenderingHandler.php:150

Event Timeline

Aklapper created this task.Wed, May 13, 6:04 PM

Change #1287001 had a related patch set uploaded (by Jforrester; author: Jforrester):

[mediawiki/extensions/WikiLambda@master] PageRenderingHandler: Don't explode if the user somehow doesn't have a history tab

https://gerrit.wikimedia.org/r/1287001

gerritbot added a project: Patch-For-Review.Wed, May 13, 6:32 PM

Jdforrester-WMF changed the task status from Open to In Progress.Wed, May 13, 6:32 PM

Jdforrester-WMF claimed this task.

Jdforrester-WMF triaged this task as Medium priority.

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

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

Change #1287001 merged by jenkins-bot:

[mediawiki/extensions/WikiLambda@master] PageRenderingHandler: Don't explode if the user somehow doesn't have a history tab

https://gerrit.wikimedia.org/r/1287001

Maintenance_bot removed a project: Patch-For-Review.Wed, May 13, 7:31 PM

ReleaseTaggerBot added a project: MW-1.47-notes (1.47.0-wmf.3; 2026-05-19).Wed, May 13, 8:00 PM

thcipriani moved this task from Untriaged to Apr–Jun 2026 on the Wikimedia-production-error board.Thu, May 14, 3:37 PM

Jdforrester-WMF moved this task from In Code review to Needs Sign-off on the Abstract Wikipedia team (26Q4 (Apr–Jun)) board.Wed, May 20, 12:18 PM

Jdforrester-WMF mentioned this in T426296: TypeError: MediaWiki\Extension\WikiLambda\HookHandler\PageRenderingHandler::appendOrReplaceQueryParams(): Argument #1 ($url) must be of type string, null given, called in WikiLambda/includes/HookHandler/PageRenderingHandler.php:150.Thu, May 21, 1:26 PM

Change #1290768 had a related patch set uploaded (by Jforrester; author: Jforrester):

[mediawiki/extensions/WikiLambda@master] PageRenderingHandler: Skip null-shaped nav entries when rewriting hrefs

https://gerrit.wikimedia.org/r/1290768

gerritbot added a project: Patch-For-Review.Thu, May 21, 1:34 PM

Change #1290768 merged by jenkins-bot: