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Maniphest T308663

LogicException: This ParserOutput contains no text!
Closed, ResolvedPublicPRODUCTION ERROR
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Description

Error
normalized_message
[{reqId}] {exception_url}   LogicException: This ParserOutput contains no text!
exception.trace
from /srv/mediawiki/php-1.39.0-wmf.12/includes/parser/ParserOutput.php(363)
#0 /srv/mediawiki/php-1.39.0-wmf.12/includes/parser/ParserOutput.php(412): ParserOutput->getRawText()
#1 /srv/mediawiki/php-1.39.0-wmf.12/extensions/CommonsMetadata/src/DataCollector.php(120): ParserOutput->getText()
#2 /srv/mediawiki/php-1.39.0-wmf.12/extensions/CommonsMetadata/src/HookHandler.php(152): CommonsMetadata\DataCollector->verifyAttributionMetadata(ParserOutput, LocalFile)
#3 /srv/mediawiki/php-1.39.0-wmf.12/includes/HookContainer/HookContainer.php(338): CommonsMetadata\HookHandler::onContentAlterParserOutput(WikitextContent, Title, ParserOutput)
#4 /srv/mediawiki/php-1.39.0-wmf.12/includes/HookContainer/HookContainer.php(137): MediaWiki\HookContainer\HookContainer->callLegacyHook(string, array, array, array)
#5 /srv/mediawiki/php-1.39.0-wmf.12/includes/HookContainer/HookRunner.php(1199): MediaWiki\HookContainer\HookContainer->run(string, array)
#6 /srv/mediawiki/php-1.39.0-wmf.12/includes/content/ContentHandler.php(1729): MediaWiki\HookContainer\HookRunner->onContentAlterParserOutput(WikitextContent, Title, ParserOutput)
#7 /srv/mediawiki/php-1.39.0-wmf.12/includes/content/Renderer/ContentRenderer.php(47): ContentHandler->getParserOutput(WikitextContent, MediaWiki\Content\Renderer\ContentParseParams)
#8 /srv/mediawiki/php-1.39.0-wmf.12/includes/Revision/RenderedRevision.php(270): MediaWiki\Content\Renderer\ContentRenderer->getParserOutput(WikitextContent, Title, NULL, ParserOptions, boolean)
#9 /srv/mediawiki/php-1.39.0-wmf.12/includes/Revision/RenderedRevision.php(237): MediaWiki\Revision\RenderedRevision->getSlotParserOutputUncached(WikitextContent, boolean)
#10 /srv/mediawiki/php-1.39.0-wmf.12/includes/Revision/RevisionRenderer.php(221): MediaWiki\Revision\RenderedRevision->getSlotParserOutput(string, array)
#11 /srv/mediawiki/php-1.39.0-wmf.12/includes/Revision/RevisionRenderer.php(158): MediaWiki\Revision\RevisionRenderer->combineSlotOutput(MediaWiki\Revision\RenderedRevision, array)
#12 [internal function]: MediaWiki\Revision\RevisionRenderer->MediaWiki\Revision\{closure}(MediaWiki\Revision\RenderedRevision, array)
#13 /srv/mediawiki/php-1.39.0-wmf.12/includes/Revision/RenderedRevision.php(199): call_user_func(Closure, MediaWiki\Revision\RenderedRevision, array)
#14 /srv/mediawiki/php-1.39.0-wmf.12/extensions/TemplateData/includes/Hooks.php(100): MediaWiki\Revision\RenderedRevision->getRevisionParserOutput(array)
#15 /srv/mediawiki/php-1.39.0-wmf.12/includes/HookContainer/HookContainer.php(338): MediaWiki\Extension\TemplateData\Hooks::onMultiContentSave(MediaWiki\Revision\RenderedRevision, User, CommentStoreComment, integer, Status)
#16 /srv/mediawiki/php-1.39.0-wmf.12/includes/HookContainer/HookContainer.php(137): MediaWiki\HookContainer\HookContainer->callLegacyHook(string, array, array, array)
#17 /srv/mediawiki/php-1.39.0-wmf.12/includes/HookContainer/HookRunner.php(2590): MediaWiki\HookContainer\HookContainer->run(string, array)
#18 /srv/mediawiki/php-1.39.0-wmf.12/includes/Storage/PageUpdater.php(894): MediaWiki\HookContainer\HookRunner->onMultiContentSave(MediaWiki\Revision\RenderedRevision, User, CommentStoreComment, integer, Status)
#19 /srv/mediawiki/php-1.39.0-wmf.12/includes/MovePage.php(997): MediaWiki\Storage\PageUpdater->saveRevision(CommentStoreComment)
#20 /srv/mediawiki/php-1.39.0-wmf.12/includes/MovePage.php(674): MovePage->moveToInternal(User, Title, string, boolean, array)
#21 /srv/mediawiki/php-1.39.0-wmf.12/includes/MovePage.php(520): MovePage->moveUnsafe(User, string, boolean, array)
#22 /srv/mediawiki/php-1.39.0-wmf.12/includes/api/ApiMove.php(120): MovePage->moveIfAllowed(User, string, boolean, array)
#23 /srv/mediawiki/php-1.39.0-wmf.12/includes/api/ApiMain.php(1902): ApiMove->execute()
#24 /srv/mediawiki/php-1.39.0-wmf.12/includes/api/ApiMain.php(874): ApiMain->executeAction()
#25 /srv/mediawiki/php-1.39.0-wmf.12/includes/api/ApiMain.php(845): ApiMain->executeActionWithErrorHandling()
#26 /srv/mediawiki/php-1.39.0-wmf.12/api.php(90): ApiMain->execute()
#27 /srv/mediawiki/php-1.39.0-wmf.12/api.php(45): wfApiMain()
#28 /srv/mediawiki/w/api.php(3): require(string)
#29 {main}
Notes

Details

MediaWiki Version
1.39.0-wmf.12
Request URL
https://commons.wikimedia.org/w/api.php
Related Changes in Gerrit:
SubjectRepoBranchLines +/-
Return early if the ParserOutput doesn't have any textmediawiki/extensions/CommonsMetadatawmf/1.39.0-wmf.12+6 -1
Return early if the ParserOutput doesn't have any textmediawiki/extensions/CommonsMetadatamaster+6 -1
Customize query in gerrit

Related Objects
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StatusSubtypeAssignedTask
 ResolvedReleasejnucheT305218 1.39.0-wmf.12 deployment blockers
 ResolvedPRODUCTION ERRORLadsgroupT308663 LogicException: This ParserOutput contains no text!

Event Timeline

jnuche created this task.May 18 2022, 11:44 AM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptMay 18 2022, 11:45 AM
TheresNoTime merged a task: T308665: renaming doesn't work.May 18 2022, 1:24 PM
TheresNoTime added subscribers: Richardkiwi, Renamerr.
TheresNoTime subscribed.
Jeff_G subscribed.May 18 2022, 1:33 PM
TheresNoTime updated the task description. (Show Details)May 18 2022, 1:34 PM
TheresNoTime set Release Version to 1.39.0-wmf.12.
Samuele2002 subscribed.May 18 2022, 1:35 PM
Jeff_G added a comment.EditedMay 18 2022, 1:37 PM

On-wiki error report: https://commons.wikimedia.org/w/index.php?title=MediaWiki_talk:Gadget-AjaxQuickDelete.js/auto-errors&diff=prev&oldid=657064030
On-wiki discussion: https://commons.wikimedia.org/w/index.php?title=MediaWiki_talk:Gadget-AjaxQuickDelete.js#Renaming
This has been autoreported 11 times so far on https://commons.wikimedia.org/wiki/MediaWiki_talk:Gadget-AjaxQuickDelete.js/auto-errors , starting "Wed, 18 May 2022 08:35:19 GMT".

jnuche triaged this task as Unbreak Now! priority.May 18 2022, 1:47 PM
jnuche added a parent task: T305218: 1.39.0-wmf.12 deployment blockers.

Escalating since it's a user-facing problem affecting basic functionality.

Ladsgroup added a project: CommonsMetadata.May 18 2022, 1:49 PM
TheresNoTime added a comment.May 18 2022, 1:55 PM

Replicated on the beta cluster:

  1. Visit https://commons.wikimedia.beta.wmflabs.org/wiki/File:PicKt2.jpg
  2. Attempt to move the file leaving behind a redirect (if the redirection is suppressed, it works)

YoT57cF3qLsEu6N-L3g6LQAAAMI on beta-logs.wmcloud

matthiasmullie subscribed.May 18 2022, 2:02 PM

https://gerrit.wikimedia.org/r/c/mediawiki/core/+/785247 may be related?

Ladsgroup added a project: Platform Engineering.May 18 2022, 2:07 PM
Ladsgroup subscribed.

This seems like an issue for the platform team.

• Tgr subscribed.May 18 2022, 2:36 PM
In T308663#7938531, @matthiasmullie wrote:

https://gerrit.wikimedia.org/r/c/mediawiki/core/+/785247 may be related?

Agreed. CommonsMetadata\HookHandler::onContentAlterParserOutput() should probably add $parserOutput->hasText() to its early return condition. (Although I'm not sure when would a wikitext content object not have text.)

gerritbot added a comment.May 18 2022, 2:53 PM

Change 793073 had a related patch set uploaded (by Ladsgroup; author: Amir Sarabadani):

[mediawiki/extensions/CommonsMetadata@master] Return early if the ParserOutput doesn't have any text

https://gerrit.wikimedia.org/r/793073

gerritbot added a project: Patch-For-Review.May 18 2022, 2:53 PM
gerritbot added a comment.May 18 2022, 3:11 PM

Change 793073 merged by jenkins-bot:

[mediawiki/extensions/CommonsMetadata@master] Return early if the ParserOutput doesn't have any text

https://gerrit.wikimedia.org/r/793073

gerritbot added a comment.May 18 2022, 3:14 PM

Change 792659 had a related patch set uploaded (by Jforrester; author: Amir Sarabadani):

[mediawiki/extensions/CommonsMetadata@wmf/1.39.0-wmf.12] Return early if the ParserOutput doesn't have any text

https://gerrit.wikimedia.org/r/792659

gerritbot added a comment.May 18 2022, 3:27 PM

Change 792659 merged by jenkins-bot:

[mediawiki/extensions/CommonsMetadata@wmf/1.39.0-wmf.12] Return early if the ParserOutput doesn't have any text

https://gerrit.wikimedia.org/r/792659

Maintenance_bot removed a project: Patch-For-Review.May 18 2022, 3:30 PM
Stashbot added a comment.May 18 2022, 3:32 PM

Mentioned in SAL (#wikimedia-operations) [2022-05-18T15:32:03Z] <ladsgroup@deploy1002> Synchronized php-1.39.0-wmf.12/extensions/CommonsMetadata/src: Backport: [[gerrit:792659|Return early if the ParserOutput doesn't have any text (T308663)]] (duration: 00m 52s)

Ladsgroup closed this task as Resolved.May 18 2022, 3:37 PM
Ladsgroup claimed this task.

Testing it in test commons it seems it's fixed now: https://test-commons.wikimedia.org/w/index.php?title=File:Watch-foop.svg&oldid=4408

Reopen if it's not fixed.

cscott added a comment.May 18 2022, 4:04 PM

Did we identify the root cause? (ie, what was the change being deployed that caused this to trigger?)

Ladsgroup added a comment.May 18 2022, 4:05 PM
In T308663#7939034, @cscott wrote:

Did we identify the root cause? (ie, what was the change being deployed that caused this to trigger?)

https://gerrit.wikimedia.org/r/c/mediawiki/core/+/785247 was the cause.

• Tgr added a comment.May 18 2022, 4:11 PM
In T308663#7939034, @cscott wrote:

Did we identify the root cause? (ie, what was the change being deployed that caused this to trigger?)

ParserOutput has always been documented to represent "no HTML output" with null and throw on getText() in that case, but that was mostly broken (it actually just returned an empty string). rMWbec8dada48e5: Clarify generate-html and make ParserOutput behave as expected fixed that. Redirect pages do not generate HTML output (apparently) so that fix causes error in code which is called for redirect content, and does not check hasText().
(Here is an approximate search; "getText" is a bit too generic to be easily searchable.)

Maybe we should temporarily replace the exception with logging and return an empty string?

ReleaseTaggerBot added a project: MW-1.39-notes (1.39.0-wmf.13; 2022-05-23).May 18 2022, 5:00 PM
daniel subscribed.May 18 2022, 6:08 PM

Redirect pages do not generate HTML output (apparently)

That seems odd. All pages should generate HTML output, unless explicitly told that it can be omitted in a given context.

Krinkle moved this task from Untriaged to May 2022 on the Wikimedia-production-error board.Jun 23 2022, 4:04 PM
hashar mentioned this in T311389: LogicException: This ParserOutput contains no text!.Jun 27 2022, 8:54 AM
hashar subscribed.

There are still some LogicException: This ParserOutput contains no text! messages which most probably have a different cause than redirect articles generating empty output. File at T311389

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