[REPO] [TECH] LogicException: This content object is empty
Open, Needs TriagePublicPRODUCTION ERROR
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Authored By

	brennen
	Dec 13 2023, 11:39 PM

Description

Error

service.version: 1.42.0-wmf.9
trace.id: 5f4835d3-a5e2-425f-838f-2928c1745fc3
Find trace.id in Logstash

labels.normalized_message

[{reqId}] {exception_url}   LogicException: This content object is empty

error.stack_trace

from /srv/mediawiki/php-1.42.0-wmf.9/extensions/Wikibase/repo/includes/Content/ItemContent.php(154)
#0 /srv/mediawiki/php-1.42.0-wmf.9/extensions/Wikibase/repo/includes/Content/ItemContent.php(168): Wikibase\Repo\Content\ItemContent->getItem()
#1 /srv/mediawiki/php-1.42.0-wmf.9/extensions/Wikibase/repo/includes/Content/EntityHandler.php(376): Wikibase\Repo\Content\ItemContent->getEntity()
#2 /srv/mediawiki/php-1.42.0-wmf.9/includes/editpage/PreloadedContentBuilder.php(94): Wikibase\Repo\Content\EntityHandler->serializeContent(Wikibase\Repo\Content\ItemContent, string)
#3 /srv/mediawiki/php-1.42.0-wmf.9/includes/api/ApiQueryInfo.php(446): MediaWiki\EditPage\PreloadedContentBuilder->getPreloadedContent(MediaWiki\Page\PageIdentityValue, MediaWiki\User\User, string, array, NULL)
#4 /srv/mediawiki/php-1.42.0-wmf.9/includes/api/ApiQueryInfo.php(295): ApiQueryInfo->extractPageInfo(integer, MediaWiki\Title\Title)
#5 /srv/mediawiki/php-1.42.0-wmf.9/includes/api/ApiQuery.php(698): ApiQueryInfo->execute()
#6 /srv/mediawiki/php-1.42.0-wmf.9/includes/api/ApiMain.php(1931): ApiQuery->execute()
#7 /srv/mediawiki/php-1.42.0-wmf.9/includes/api/ApiMain.php(908): ApiMain->executeAction()
#8 /srv/mediawiki/php-1.42.0-wmf.9/includes/api/ApiMain.php(879): ApiMain->executeActionWithErrorHandling()
#9 /srv/mediawiki/php-1.42.0-wmf.9/api.php(95): ApiMain->execute()
#10 /srv/mediawiki/php-1.42.0-wmf.9/api.php(48): wfApiMain()
#11 /srv/mediawiki/w/api.php(3): require(string)
#12 {main}

Impact

Notes

A spike of 195 of these in 1.42.0-wmf.9 (T350085).

Details

Request URL: https://www.wikidata.org/w/api.php?action=query&format=*&formatversion=*&ineditintrocustom=*&inpreloadcustom=*&inpreloadparams=*&inprop=*&intestactions=*&intestactionsautocreate=*&intestactionsdetail=*&prop=*&rvprop=*&titles=*

Related Objects

Mentioned Here: T350085: 1.42.0-wmf.9 deployment blockers

Event Timeline

brennen created this task.Dec 13 2023, 11:39 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptDec 13 2023, 11:39 PM

brennen moved this task from Backlog to Logs/Train on the User-brennen board.Dec 13 2023, 11:39 PM

Maintenance_bot added a project: Wikidata.Dec 13 2023, 11:45 PM

Restricted Application added a project: wmde-wikidata-tech. · View Herald TranscriptDec 13 2023, 11:45 PM

Reduced request URL: https://www.wikidata.org/w/api.php?action=query&format=json&prop=info&titles=%40%40GV29t&formatversion=2&inprop=preloadcontent

i.e., action=info with inprop=preloadcontent for the nonsensical title @@GV29t.

I have a feeling PreloadedContentBuilder::getPreloadedContent() should be checking $content->isValid() before trying to work with the content? But I’m not sure. (And this is just a quick first look, I don’t intend to look much further into this before we’ve prioritized it.)

brennen moved this task from Untriaged to Dec 2023 on the Wikimedia-production-error board.Dec 14 2023, 4:30 PM

Michael subscribed.Jan 4 2024, 1:43 PM

Lucas_Werkmeister_WMDE renamed this task from LogicException: This content object is empty to [REPO] [TECH] LogicException: This content object is empty.Feb 9 2024, 3:22 PM

Lucas_Werkmeister_WMDE moved this task from Incoming to [DOT] By Project on the wmde-wikidata-tech board.

Lucas_Werkmeister_WMDE added a project: [Archived]Wikidata Dev Team.

karapayneWMDE moved this task from Incoming to [DOT] Tech Backlog on the [Archived]Wikidata Dev Team board.Feb 13 2024, 3:06 PM

karapayneWMDE removed a project: [Archived]Wikidata Dev Team.Feb 13 2024, 3:43 PM

ItamarWMDE moved this task from [DOT] By Project to Wikidata Omega Triage on the wmde-wikidata-tech board.Dec 4 2024, 11:43 AM

ItamarWMDE edited projects, added wmde-wikidata-tech (Wikidata Omega Triage); removed wmde-wikidata-tech.

ItamarWMDE moved this task from Incoming to Repo on the wmde-wikidata-tech (Wikidata Omega Triage) board.Dec 4 2024, 2:07 PM