Steps to replicate the issue (include links if applicable):
What happens?:
MediaWiki internal error. Original exception: [ZAO9slsEpiJRX5C8o4JRMwAAABI] /wiki/File:ACDC_test_file_1.pdf MWContentSerializationException: The provided entity serialization is neither legacy nor current Backtrace: from /srv/mediawiki/php-master/extensions/Wikibase/lib/includes/Store/EntityContentDataCodec.php(255) #0 /srv/mediawiki/php-master/extensions/Wikibase/repo/includes/Content/DeferredDecodingEntityHolder.php(99): Wikibase\Lib\Store\EntityContentDataCodec->decodeEntity(string, NULL) #1 /srv/mediawiki/php-master/extensions/Wikibase/repo/includes/Content/DeferredCopyEntityHolder.php(47): Wikibase\Repo\Content\DeferredDecodingEntityHolder->getEntity(string) #2 /srv/mediawiki/php-master/extensions/WikibaseMediaInfo/src/Content/MediaInfoContent.php(107): Wikibase\Repo\Content\DeferredCopyEntityHolder->getEntity(string) #3 /srv/mediawiki/php-master/extensions/WikibaseMediaInfo/src/Content/MediaInfoContent.php(116): Wikibase\MediaInfo\Content\MediaInfoContent->getMediaInfo() #4 /srv/mediawiki/php-master/extensions/Wikibase/repo/includes/Content/EntityHandler.php(888): Wikibase\MediaInfo\Content\MediaInfoContent->getEntity() #5 /srv/mediawiki/php-master/extensions/Wikibase/repo/includes/Content/EntityHandler.php(857): Wikibase\Repo\Content\EntityHandler->getEntityRevision(Wikibase\MediaInfo\Content\MediaInfoContent, integer) #6 /srv/mediawiki/php-master/extensions/Wikibase/repo/includes/Content/EntityHandler.php(794): Wikibase\Repo\Content\EntityHandler->getParserOutputFromEntityView(Wikibase\MediaInfo\Content\MediaInfoContent, integer, ParserOptions, boolean) #7 /srv/mediawiki/php-master/includes/content/ContentHandler.php(1748): Wikibase\Repo\Content\EntityHandler->fillParserOutput(Wikibase\MediaInfo\Content\MediaInfoContent, MediaWiki\Content\Renderer\ContentParseParams, ParserOutput) #8 /srv/mediawiki/php-master/includes/content/Renderer/ContentRenderer.php(47): ContentHandler->getParserOutput(Wikibase\MediaInfo\Content\MediaInfoContent, MediaWiki\Content\Renderer\ContentParseParams) #9 /srv/mediawiki/php-master/includes/Revision/RenderedRevision.php(260): MediaWiki\Content\Renderer\ContentRenderer->getParserOutput(Wikibase\MediaInfo\Content\MediaInfoContent, MediaWiki\Title\Title, integer, ParserOptions, boolean) #10 /srv/mediawiki/php-master/includes/Revision/RenderedRevision.php(232): MediaWiki\Revision\RenderedRevision->getSlotParserOutputUncached(Wikibase\MediaInfo\Content\MediaInfoContent, boolean) #11 /srv/mediawiki/php-master/includes/Revision/RevisionRenderer.php(242): MediaWiki\Revision\RenderedRevision->getSlotParserOutput(string, array) #12 /srv/mediawiki/php-master/includes/Revision/RevisionRenderer.php(164): MediaWiki\Revision\RevisionRenderer->combineSlotOutput(MediaWiki\Revision\RenderedRevision, array) #13 [internal function]: MediaWiki\Revision\RevisionRenderer->MediaWiki\Revision\{closure}(MediaWiki\Revision\RenderedRevision, array) #14 /srv/mediawiki/php-master/includes/Revision/RenderedRevision.php(199): call_user_func(Closure, MediaWiki\Revision\RenderedRevision, array) #15 /srv/mediawiki/php-master/includes/poolcounter/PoolWorkArticleView.php(87): MediaWiki\Revision\RenderedRevision->getRevisionParserOutput() #16 /srv/mediawiki/php-master/includes/poolcounter/PoolWorkArticleView.php(68): PoolWorkArticleView->renderRevision() #17 /srv/mediawiki/php-master/includes/poolcounter/PoolCounterWork.php(166): PoolWorkArticleView->doWork() #18 /srv/mediawiki/php-master/includes/page/ParserOutputAccess.php(299): PoolCounterWork->execute() #19 /srv/mediawiki/php-master/includes/page/Article.php(735): MediaWiki\Page\ParserOutputAccess->getParserOutput(WikiFilePage, ParserOptions, MediaWiki\Revision\RevisionStoreCacheRecord, integer) #20 /srv/mediawiki/php-master/includes/page/Article.php(545): Article->generateContentOutput(User, ParserOptions, integer, OutputPage, array) #21 /srv/mediawiki/php-master/includes/page/ImagePage.php(154): Article->view() #22 /srv/mediawiki/php-master/includes/actions/ViewAction.php(78): ImagePage->view() #23 /srv/mediawiki/php-master/includes/MediaWiki.php(556): ViewAction->show() #24 /srv/mediawiki/php-master/includes/MediaWiki.php(333): MediaWiki->performAction(ImagePage, MediaWiki\Title\Title) #25 /srv/mediawiki/php-master/includes/MediaWiki.php(920): MediaWiki->performRequest() #26 /srv/mediawiki/php-master/includes/MediaWiki.php(576): MediaWiki->main() #27 /srv/mediawiki/php-master/index.php(50): MediaWiki->run() #28 /srv/mediawiki/php-master/index.php(46): wfIndexMain() #29 /srv/mediawiki/w/index.php(3): require(string) #30 {main} Exception caught inside exception handler: [ZAO9slsEpiJRX5C8o4JRMwAAABI] /wiki/File:ACDC_test_file_1.pdf Wikibase\DataModel\Services\Lookup\EntityLookupException: Failed to unserialize the content object. Backtrace: from /srv/mediawiki/php-master/extensions/Wikibase/lib/includes/Store/RevisionBasedEntityLookup.php(51) #0 /srv/mediawiki/php-master/extensions/Wikibase/lib/packages/wikibase/data-model-services/src/Lookup/RedirectResolvingEntityLookup.php(51): Wikibase\Lib\Store\RevisionBasedEntityLookup->getEntity(Wikibase\MediaInfo\DataModel\MediaInfoId) #1 /srv/mediawiki/php-master/extensions/WikibaseMediaInfo/src/WikibaseMediaInfoHooks.php(245): Wikibase\DataModel\Services\Lookup\RedirectResolvingEntityLookup->getEntity(Wikibase\MediaInfo\DataModel\MediaInfoId) #2 /srv/mediawiki/php-master/extensions/WikibaseMediaInfo/src/WikibaseMediaInfoHooks.php(210): Wikibase\MediaInfo\WikibaseMediaInfoHooks->doBeforePageDisplay(OutputPage, MediaWiki\Skins\Vector\SkinVector22, boolean, Wikibase\Repo\BabelUserLanguageLookup, Wikibase\Repo\ParserOutput\DispatchingEntityViewFactory, array) #3 /srv/mediawiki/php-master/includes/HookContainer/HookContainer.php(338): Wikibase\MediaInfo\WikibaseMediaInfoHooks::onBeforePageDisplay(OutputPage, MediaWiki\Skins\Vector\SkinVector22) #4 /srv/mediawiki/php-master/includes/HookContainer/HookContainer.php(137): MediaWiki\HookContainer\HookContainer->callLegacyHook(string, array, array, array) #5 /srv/mediawiki/php-master/includes/HookContainer/HookRunner.php(935): MediaWiki\HookContainer\HookContainer->run(string, array, array) #6 /srv/mediawiki/php-master/includes/OutputPage.php(2894): MediaWiki\HookContainer\HookRunner->onBeforePageDisplay(OutputPage, MediaWiki\Skins\Vector\SkinVector22) #7 /srv/mediawiki/php-master/includes/exception/MWException.php(184): OutputPage->output() #8 /srv/mediawiki/php-master/includes/exception/MWException.php(218): MWException->reportHTML() #9 /srv/mediawiki/php-master/includes/exception/MWExceptionHandler.php(130): MWException->report() #10 /srv/mediawiki/php-master/includes/exception/MWExceptionHandler.php(249): MWExceptionHandler::report(MWContentSerializationException) #11 /srv/mediawiki/php-master/includes/MediaWiki.php(595): MWExceptionHandler::handleException(MWContentSerializationException, string) #12 /srv/mediawiki/php-master/index.php(50): MediaWiki->run() #13 /srv/mediawiki/php-master/index.php(46): wfIndexMain() #14 /srv/mediawiki/w/index.php(3): require(string) #15 {main}
What should have happened instead?:
Show the file.
Other information (browser name/version, screenshots, etc.):
This was detected by the AC/DC browser tests, which run daily (though I didn’t immediately look into it); it first happened on 2023-03-02. Possibly related to T331019: Edits not saving on beta cluster (db replication error, corrupted table)?