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Maniphest T422158

PHP Warning: Undefined array key "entities"
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PHP Warning: Undefined array key "entities"
from /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/WikiProject/WikiProjectFullLookup.php(159)
#0 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/WikiProject/WikiProjectFullLookup.php(159): MediaWiki\Exception\MWExceptionHandler::handleError(int, string, string, int)
#1 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/WikiProject/WikiProjectFullLookup.php(130): MediaWiki\Extension\WikimediaCampaignEvents\WikiProject\WikiProjectFullLookup->queryWikidataAPI(array, string)
#2 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/WikiProject/WikiProjectFullLookup.php(118): MediaWiki\Extension\WikimediaCampaignEvents\WikiProject\WikiProjectFullLookup->computeDataForEntities(array, string)
#3 /srv/mediawiki/php-1.46.0-wmf.22/includes/libs/ObjectCache/WANObjectCache.php(1831): MediaWiki\Extension\WikimediaCampaignEvents\WikiProject\WikiProjectFullLookup->MediaWiki\Extension\WikimediaCampaignEvents\WikiProject\{closure}(bool, int, array, null, array)
#4 /srv/mediawiki/php-1.46.0-wmf.22/includes/libs/ObjectCache/WANObjectCache.php(1641): Wikimedia\ObjectCache\WANObjectCache->fetchOrRegenerate(string, int, Closure, array, array)
#5 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/WikiProject/WikiProjectFullLookup.php(114): Wikimedia\ObjectCache\WANObjectCache->getWithSetCallback(string, int, Closure)
#6 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/WikiProject/WikiProjectFullLookup.php(68): MediaWiki\Extension\WikimediaCampaignEvents\WikiProject\WikiProjectFullLookup->getDataForEntities(array, string)
#7 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/Hooks/Handlers/CollaborationListHandler.php(84): MediaWiki\Extension\WikimediaCampaignEvents\WikiProject\WikiProjectFullLookup->getWikiProjects(string, int, null, int)
#8 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/Hooks/Handlers/CollaborationListHandler.php(40): MediaWiki\Extension\WikimediaCampaignEvents\Hooks\Handlers\CollaborationListHandler->getCollaborationListContent(MediaWiki\Output\OutputPage, bool)
#9 /srv/mediawiki/php-1.46.0-wmf.22/includes/HookContainer/HookContainer.php(135): MediaWiki\Extension\WikimediaCampaignEvents\Hooks\Handlers\CollaborationListHandler->onCampaignEventsGetAllEventsTabs(MediaWiki\Extension\CampaignEvents\Special\SpecialAllEvents, array, string)
#10 /srv/mediawiki/php-1.46.0-wmf.22/extensions/CampaignEvents/src/Hooks/CampaignEventsHookRunner.php(97): MediaWiki\HookContainer\HookContainer->run(string, array, array)
#11 /srv/mediawiki/php-1.46.0-wmf.22/extensions/CampaignEvents/src/Special/SpecialAllEvents.php(70): MediaWiki\Extension\CampaignEvents\Hooks\CampaignEventsHookRunner->onCampaignEventsGetAllEventsTabs(MediaWiki\Extension\CampaignEvents\Special\SpecialAllEvents, array, string)
#12 /srv/mediawiki/php-1.46.0-wmf.22/includes/SpecialPage/SpecialPage.php(714): MediaWiki\Extension\CampaignEvents\Special\SpecialAllEvents->execute(null)
#13 /srv/mediawiki/php-1.46.0-wmf.22/includes/SpecialPage/SpecialPageFactory.php(1713): MediaWiki\SpecialPage\SpecialPage->run(null)
#14 /srv/mediawiki/php-1.46.0-wmf.22/includes/Actions/ActionEntryPoint.php(505): MediaWiki\SpecialPage\SpecialPageFactory->executePath(string, MediaWiki\Context\RequestContext)
#15 /srv/mediawiki/php-1.46.0-wmf.22/includes/Actions/ActionEntryPoint.php(145): MediaWiki\Actions\ActionEntryPoint->performRequest()
#16 /srv/mediawiki/php-1.46.0-wmf.22/includes/MediaWikiEntryPoint.php(180): MediaWiki\Actions\ActionEntryPoint->execute()
#17 /srv/mediawiki/php-1.46.0-wmf.22/index.php(44): MediaWiki\MediaWikiEntryPoint->run()
#18 /srv/mediawiki/w/index.php(3): require(string)
#19 {main}

When this happens, it is then followed by the error:

array_merge(): Argument #2 must be of type array, null given
from /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/WikiProject/WikiProjectFullLookup.php(159)
#0 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/WikiProject/WikiProjectFullLookup.php(159): array_merge(array, null)
#1 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/WikiProject/WikiProjectFullLookup.php(130): MediaWiki\Extension\WikimediaCampaignEvents\WikiProject\WikiProjectFullLookup->queryWikidataAPI(array, string)
#2 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/WikiProject/WikiProjectFullLookup.php(118): MediaWiki\Extension\WikimediaCampaignEvents\WikiProject\WikiProjectFullLookup->computeDataForEntities(array, string)
#3 /srv/mediawiki/php-1.46.0-wmf.22/includes/libs/ObjectCache/WANObjectCache.php(1831): MediaWiki\Extension\WikimediaCampaignEvents\WikiProject\WikiProjectFullLookup->MediaWiki\Extension\WikimediaCampaignEvents\WikiProject\{closure}(bool, int, array, null, array)
#4 /srv/mediawiki/php-1.46.0-wmf.22/includes/libs/ObjectCache/WANObjectCache.php(1641): Wikimedia\ObjectCache\WANObjectCache->fetchOrRegenerate(string, int, Closure, array, array)
#5 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/WikiProject/WikiProjectFullLookup.php(114): Wikimedia\ObjectCache\WANObjectCache->getWithSetCallback(string, int, Closure)
#6 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/WikiProject/WikiProjectFullLookup.php(68): MediaWiki\Extension\WikimediaCampaignEvents\WikiProject\WikiProjectFullLookup->getDataForEntities(array, string)
#7 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/Hooks/Handlers/CollaborationListHandler.php(84): MediaWiki\Extension\WikimediaCampaignEvents\WikiProject\WikiProjectFullLookup->getWikiProjects(string, int, null, int)
#8 /srv/mediawiki/php-1.46.0-wmf.22/extensions/WikimediaCampaignEvents/src/Hooks/Handlers/CollaborationListHandler.php(40): MediaWiki\Extension\WikimediaCampaignEvents\Hooks\Handlers\CollaborationListHandler->getCollaborationListContent(MediaWiki\Output\OutputPage, bool)
#9 /srv/mediawiki/php-1.46.0-wmf.22/includes/HookContainer/HookContainer.php(135): MediaWiki\Extension\WikimediaCampaignEvents\Hooks\Handlers\CollaborationListHandler->onCampaignEventsGetAllEventsTabs(MediaWiki\Extension\CampaignEvents\Special\SpecialAllEvents, array, string)
#10 /srv/mediawiki/php-1.46.0-wmf.22/extensions/CampaignEvents/src/Hooks/CampaignEventsHookRunner.php(97): MediaWiki\HookContainer\HookContainer->run(string, array, array)
#11 /srv/mediawiki/php-1.46.0-wmf.22/extensions/CampaignEvents/src/Special/SpecialAllEvents.php(70): MediaWiki\Extension\CampaignEvents\Hooks\CampaignEventsHookRunner->onCampaignEventsGetAllEventsTabs(MediaWiki\Extension\CampaignEvents\Special\SpecialAllEvents, array, string)
#12 /srv/mediawiki/php-1.46.0-wmf.22/includes/SpecialPage/SpecialPage.php(714): MediaWiki\Extension\CampaignEvents\Special\SpecialAllEvents->execute(null)
#13 /srv/mediawiki/php-1.46.0-wmf.22/includes/SpecialPage/SpecialPageFactory.php(1713): MediaWiki\SpecialPage\SpecialPage->run(null)
#14 /srv/mediawiki/php-1.46.0-wmf.22/includes/SpecialPage/SpecialPageFactory.php(1782): MediaWiki\SpecialPage\SpecialPageFactory->executePath(string, MediaWiki\Context\RequestContext, bool, MediaWiki\Linker\LinkRenderer)
#15 /srv/mediawiki/php-1.46.0-wmf.22/includes/Parser/Parser.php(3158): MediaWiki\SpecialPage\SpecialPageFactory->capturePath(MediaWiki\Title\Title, MediaWiki\Context\RequestContext, MediaWiki\Linker\LinkRenderer)
#16 /srv/mediawiki/php-1.46.0-wmf.22/includes/Parser/PPFrame_Hash.php(267): MediaWiki\Parser\Parser->braceSubstitution(array, MediaWiki\Parser\PPFrame_Hash)
#17 /srv/mediawiki/php-1.46.0-wmf.22/includes/Parser/Parser.php(2875): MediaWiki\Parser\PPFrame_Hash->expand(MediaWiki\Parser\PPNode_Hash_Tree, int)
#18 /srv/mediawiki/php-1.46.0-wmf.22/includes/Parser/Parser.php(1498): MediaWiki\Parser\Parser->replaceVariables(string)
#19 /srv/mediawiki/php-1.46.0-wmf.22/includes/Parser/Parser.php(623): MediaWiki\Parser\Parser->internalParse(string)
#20 /srv/mediawiki/php-1.46.0-wmf.22/includes/Content/WikitextContentHandler.php(375): MediaWiki\Parser\Parser->parse(string, MediaWiki\Title\Title, MediaWiki\Parser\ParserOptions, bool, bool, int)
#21 /srv/mediawiki/php-1.46.0-wmf.22/includes/Content/ContentHandler.php(1572): MediaWiki\Content\WikitextContentHandler->fillParserOutput(MediaWiki\Content\WikitextContent, MediaWiki\Content\Renderer\ContentParseParams, MediaWiki\Parser\ParserOutput)
#22 /srv/mediawiki/php-1.46.0-wmf.22/includes/Content/Renderer/ContentRenderer.php(67): MediaWiki\Content\ContentHandler->getParserOutput(MediaWiki\Content\WikitextContent, MediaWiki\Content\Renderer\ContentParseParams)
#23 /srv/mediawiki/php-1.46.0-wmf.22/includes/Revision/RenderedRevision.php(246): MediaWiki\Content\Renderer\ContentRenderer->getParserOutput(MediaWiki\Content\WikitextContent, MediaWiki\Page\PageIdentityValue, MediaWiki\Revision\RevisionStoreCacheRecord, MediaWiki\Parser\ParserOptions, array)
#24 /srv/mediawiki/php-1.46.0-wmf.22/includes/Revision/RenderedRevision.php(219): MediaWiki\Revision\RenderedRevision->getSlotParserOutputUncached(MediaWiki\Content\WikitextContent, array)
#25 /srv/mediawiki/php-1.46.0-wmf.22/includes/Revision/RevisionRenderer.php(226): MediaWiki\Revision\RenderedRevision->getSlotParserOutput(string, array)
#26 /srv/mediawiki/php-1.46.0-wmf.22/includes/Revision/RevisionRenderer.php(159): MediaWiki\Revision\RevisionRenderer->combineSlotOutput(MediaWiki\Revision\RenderedRevision, MediaWiki\Parser\ParserOptions, array)
#27 /srv/mediawiki/php-1.46.0-wmf.22/includes/Revision/RenderedRevision.php(182): MediaWiki\Revision\RevisionRenderer->MediaWiki\Revision\{closure}(MediaWiki\Revision\RenderedRevision, array)
#28 /srv/mediawiki/php-1.46.0-wmf.22/includes/Page/ParserOutputAccess.php(593): MediaWiki\Revision\RenderedRevision->getRevisionParserOutput()
#29 /srv/mediawiki/php-1.46.0-wmf.22/includes/Page/ParserOutputAccess.php(684): MediaWiki\Page\ParserOutputAccess->renderRevision(MediaWiki\Page\WikiPage, MediaWiki\Parser\ParserOptions, MediaWiki\Revision\RevisionStoreCacheRecord, array)
#30 /srv/mediawiki/php-1.46.0-wmf.22/includes/PoolCounter/PoolCounterWorkViaCallback.php(68): MediaWiki\Page\ParserOutputAccess->MediaWiki\Page\{closure}()
#31 /srv/mediawiki/php-1.46.0-wmf.22/includes/PoolCounter/PoolCounterWork.php(159): MediaWiki\PoolCounter\PoolCounterWorkViaCallback->doWork()
#32 /srv/mediawiki/php-1.46.0-wmf.22/includes/Page/ParserOutputAccess.php(498): MediaWiki\PoolCounter\PoolCounterWork->execute()
#33 /srv/mediawiki/php-1.46.0-wmf.22/includes/Page/Article.php(894): MediaWiki\Page\ParserOutputAccess->getParserOutput(MediaWiki\Page\WikiPage, MediaWiki\Parser\ParserOptions, MediaWiki\Revision\RevisionStoreCacheRecord, array)
#34 /srv/mediawiki/php-1.46.0-wmf.22/includes/Page/Article.php(555): MediaWiki\Page\Article->generateContentOutput(MediaWiki\User\User, MediaWiki\Parser\ParserOptions, int, MediaWiki\Output\OutputPage, array)
#35 /srv/mediawiki/php-1.46.0-wmf.22/includes/Actions/ViewAction.php(71): MediaWiki\Page\Article->view()
#36 /srv/mediawiki/php-1.46.0-wmf.22/includes/Actions/ActionEntryPoint.php(752): MediaWiki\Actions\ViewAction->show()
#37 /srv/mediawiki/php-1.46.0-wmf.22/includes/Actions/ActionEntryPoint.php(511): MediaWiki\Actions\ActionEntryPoint->performAction(MediaWiki\Page\Article, MediaWiki\Title\Title)
#38 /srv/mediawiki/php-1.46.0-wmf.22/includes/Actions/ActionEntryPoint.php(145): MediaWiki\Actions\ActionEntryPoint->performRequest()
#39 /srv/mediawiki/php-1.46.0-wmf.22/includes/MediaWikiEntryPoint.php(180): MediaWiki\Actions\ActionEntryPoint->execute()
#40 /srv/mediawiki/php-1.46.0-wmf.22/index.php(44): MediaWiki\MediaWikiEntryPoint->run()
#41 /srv/mediawiki/w/index.php(3): require(string)
#42 {main}

Details

Request URL
https://nl.wikipedia.org/wiki/Special:AllEvents?wpSearch=*
Related Changes in Gerrit:
SubjectRepoBranchLines +/-
WikiProjectFullLookup: handle response with no entitiesmediawiki/extensions/WikimediaCampaignEventsmaster+20 -9
Customize query in gerrit

Related Objects

Event Timeline

Daimona created this task.Apr 2 2026, 1:40 PM
Restricted Application assigned this task to Slack_connector_for_Campaigns_engineering. · View Herald TranscriptApr 2 2026, 1:40 PM
Restricted Application added a subscriber: Aklapper. · View Herald Transcript
Daimona updated the task description. (Show Details)Apr 2 2026, 1:52 PM
gerritbot added a comment.Apr 3 2026, 6:06 PM

Change #1267914 had a related patch set uploaded (by Daimona Eaytoy; author: Daimona Eaytoy):

[mediawiki/extensions/WikimediaCampaignEvents@master] WikiProjectFullLookup: handle response with no entities

https://gerrit.wikimedia.org/r/1267914

gerritbot added a project: Patch-For-Review.Apr 3 2026, 6:06 PM
Daimona claimed this task.Apr 3 2026, 6:07 PM
Daimona moved this task from Upcoming / refining 💡 to Code Review 💬 on the Connection-Team (Connection-Current-Sprint) board.
Daimona added a subscriber: Slack_connector_for_Campaigns_engineering.
VPuffetMichel edited projects, added: Connection-Team; removed: Connection-Team (Connection-Current-Sprint).Apr 16 2026, 2:43 PM
VPuffetMichel edited projects, added: Connection-Team (Connection-Q4-13Apr-24Apr-2026); removed: Connection-Team.
VPuffetMichel moved this task from Upcoming / refining 💡 to Code Review 💬 on the Connection-Team (Connection-Q4-13Apr-24Apr-2026) board.
cmelo subscribed.Apr 29 2026, 3:08 PM

Tests Made:

  • As wrote in gerrit we don't know why this can happen, but the implementation made covers the error and there were also logs added.
cmelo closed this task as Resolved.Apr 29 2026, 3:09 PM
cmelo moved this task from Code Review 💬 to Done 🏁 on the Connection-Team (Connection-Q4-13Apr-24Apr-2026) board.
gerritbot added a comment.Apr 29 2026, 3:37 PM

Change #1267914 merged by jenkins-bot:

[mediawiki/extensions/WikimediaCampaignEvents@master] WikiProjectFullLookup: handle response with no entities

https://gerrit.wikimedia.org/r/1267914

Daimona mentioned this in rEWCE3c9a7667c67b: WikiProjectFullLookup: handle response with no entities.Apr 29 2026, 3:39 PM
ReleaseTaggerBot added a project: MW-1.47-notes (1.47.0-wmf.1; 2026-05-05).Apr 29 2026, 4:00 PM
Maintenance_bot removed a project: Patch-For-Review.Apr 29 2026, 4:33 PM
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