Lucas_Werkmeister_WMDE created this task.
Lucas_Werkmeister_WMDE added projects: Wikimedia-production-error, Wikidata, 
SDC General, Commons.
Restricted Application added a subscriber: Aklapper.
Restricted Application added a project: wdwb-tech-focus.

TASK DESCRIPTION
  name=Error message
    Return value of Wikibase\Repo\Content\EntityContentFactory::getTitleForId() 
must be an instance of Title, null returned
  
  name=Stack Trace
        
    from 
/srv/mediawiki/php-1.36.0-wmf.28/extensions/Wikibase/repo/includes/Content/EntityContentFactory.php(134)
    #0 
/srv/mediawiki/php-1.36.0-wmf.28/extensions/Wikibase/repo/includes/Store/TypeDispatchingEntityTitleStoreLookup.php(44):
 
Wikibase\Repo\Content\EntityContentFactory->getTitleForId(Wikibase\MediaInfo\DataModel\MediaInfoId)
    #1 
/srv/mediawiki/php-1.36.0-wmf.28/extensions/Wikibase/repo/includes/LinkedData/EntityDataUriManager.php(151):
 
Wikibase\Repo\Store\TypeDispatchingEntityTitleStoreLookup->getTitleForId(Wikibase\MediaInfo\DataModel\MediaInfoId)
    #2 
/srv/mediawiki/php-1.36.0-wmf.28/extensions/Wikibase/repo/includes/LinkedData/EntityDataUriManager.php(182):
 
Wikibase\Repo\LinkedData\EntityDataUriManager->getDocTitle(Wikibase\MediaInfo\DataModel\MediaInfoId,
 string)
    #3 
/srv/mediawiki/php-1.36.0-wmf.28/extensions/Wikibase/repo/includes/LinkedData/EntityDataRequestHandler.php(356):
 
Wikibase\Repo\LinkedData\EntityDataUriManager->getDocUrl(Wikibase\MediaInfo\DataModel\MediaInfoId,
 string, integer)
    #4 
/srv/mediawiki/php-1.36.0-wmf.28/extensions/Wikibase/repo/includes/LinkedData/EntityDataRequestHandler.php(234):
 
Wikibase\Repo\LinkedData\EntityDataRequestHandler->httpContentNegotiation(WebRequest,
 OutputPage, Wikibase\MediaInfo\DataModel\MediaInfoId, integer)
    #5 
/srv/mediawiki/php-1.36.0-wmf.28/extensions/Wikibase/repo/includes/Specials/SpecialEntityData.php(118):
 Wikibase\Repo\LinkedData\EntityDataRequestHandler->handleRequest(string, 
WebRequest, OutputPage)
    #6 
/srv/mediawiki/php-1.36.0-wmf.28/includes/specialpage/SpecialPage.php(645): 
Wikibase\Repo\Specials\SpecialEntityData->execute(string)
    #7 
/srv/mediawiki/php-1.36.0-wmf.28/includes/specialpage/SpecialPageFactory.php(1405):
 SpecialPage->run(string)
    #8 /srv/mediawiki/php-1.36.0-wmf.28/includes/MediaWiki.php(310): 
MediaWiki\SpecialPage\SpecialPageFactory->executePath(Title, RequestContext)
    #9 /srv/mediawiki/php-1.36.0-wmf.28/includes/MediaWiki.php(944): 
MediaWiki->performRequest()
    #10 /srv/mediawiki/php-1.36.0-wmf.28/includes/MediaWiki.php(548): 
MediaWiki->main()
    #11 /srv/mediawiki/php-1.36.0-wmf.28/index.php(53): MediaWiki->run()
    #12 /srv/mediawiki/php-1.36.0-wmf.28/index.php(46): wfIndexMain()
    #13 /srv/mediawiki/w/index.php(3): require(string)
    #14 {main}
  
  
  
  Impact
  ------
  
  Low – 37 messages over the past 30 days (mostly after 2020-01-27).
  F34083442: Screenshot_2021-02-01 Wikibase Errors (low noise) - Elastic.png 
<https://phabricator.wikimedia.org/F34083442>
  
  Notes
  -----
  
  Only seems to affect Commons, with Special:EntityData/M... titles. Also, for 
the few instances I’ve tested so far, plugging the page ID from the request 
title into index.php?curid= (example link 
<https://commons.wikimedia.org/w/index.php?curid=96853506>) yields a “bad 
title” error (“The requested page title is empty or contains only the name of a 
namespace.”).

TASK DETAIL
  https://phabricator.wikimedia.org/T273506

EMAIL PREFERENCES
  https://phabricator.wikimedia.org/settings/panel/emailpreferences/

To: Lucas_Werkmeister_WMDE
Cc: Lucas_Werkmeister_WMDE, Aklapper, GFontenelle_WMF, FRomeo_WMF, Muchiri124, 
CBogen, Nintendofan885, Akuckartz, darthmon_wmde, Nandana, JKSTNK, Lahi, 
PDrouin-WMF, Gq86, E1presidente, Ramsey-WMF, Cparle, Anooprao, SandraF_WMF, 
GoranSMilovanovic, QZanden, Tramullas, Acer, LawExplorer, Salgo60, Silverfish, 
Poyekhali, _jensen, rosalieper, Taiwania_Justo, Scott_WUaS, Susannaanas, 
Ixocactus, Wong128hk, Verdy_p, Jane023, Wikidata-bugs, Base, matthiasmullie, 
aude, El_Grafo, Dinoguy1000, Ricordisamoa, Wesalius, Lydia_Pintscher, 
Fabrice_Florin, Raymond, Jdforrester-WMF, Addshore, Steinsplitter, Mbch331, 
Rxy, Jay8g, Keegan
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