wiki/Special:ItemByTitle - internal error

[chram2]

In the Wiki there is suddenly an error if you want to go to "Special:ItemByTitle" https://wiki.openstreetmap.org/wiki/Special:ItemByTitle - it tells:

Internal error

[d7dee4d3b8512ff4a8897f0a] 2025-02-05 07:10:44: Fatal exception of type "TypeError"

For at least 2 users right now, see also Wiki talk page.

[Firefishy]

Annoyingly it appears mediawiki is not logging any errors in the PHP error log.

[Firefishy]

Here is the full error being thrown:

[66c94f6c0ddf723733a65c02] /wiki/Special:ItemByTitle TypeError: Wikibase\Lib\LanguageNameLookup::getName(): Argument #1 ($languageCode) must be of type string, null given, called in /srv/wiki.openstreetmap.org/w/extensions/Wikibase/repo/includes/Specials/SpecialItemByTitle.php on line 192

Backtrace:

from /srv/wiki.openstreetmap.org/w/extensions/Wikibase/lib/includes/LanguageNameLookup.php(32)
#0 /srv/wiki.openstreetmap.org/w/extensions/Wikibase/repo/includes/Specials/SpecialItemByTitle.php(192): Wikibase\Lib\LanguageNameLookup->getName()
#1 /srv/wiki.openstreetmap.org/w/extensions/Wikibase/repo/includes/Specials/SpecialItemByTitle.php(222): Wikibase\Repo\Specials\SpecialItemByTitle->getSiteOptions()
#2 /srv/wiki.openstreetmap.org/w/extensions/Wikibase/repo/includes/Specials/SpecialItemByTitle.php(180): Wikibase\Repo\Specials\SpecialItemByTitle->switchForm()
#3 /srv/wiki.openstreetmap.org/w/includes/specialpage/SpecialPage.php(701): Wikibase\Repo\Specials\SpecialItemByTitle->execute()
#4 /srv/wiki.openstreetmap.org/w/includes/specialpage/SpecialPageFactory.php(1428): SpecialPage->run()
#5 /srv/wiki.openstreetmap.org/w/includes/MediaWiki.php(316): MediaWiki\SpecialPage\SpecialPageFactory->executePath()
#6 /srv/wiki.openstreetmap.org/w/includes/MediaWiki.php(904): MediaWiki->performRequest()
#7 /srv/wiki.openstreetmap.org/w/includes/MediaWiki.php(562): MediaWiki->main()
#8 /srv/wiki.openstreetmap.org/w/index.php(50): MediaWiki->run()
#9 /srv/wiki.openstreetmap.org/w/index.php(46): wfIndexMain()
#10 {main}

[Firefishy]

Likely related to a recent change here: https://github.com/wikimedia/mediawiki-extensions-Wikibase/commits/REL1_39/

[Firefishy]

@nyurik This is likely something better suited to you.

[nyurik]

thx, i'll take a look. If I understand it correctly, it is only related to the special page that's rarely used, so shouldn't cause a big blocker from the start.

[chram2]

Thanks for investigating! - For now the only issue I've encountered is that this Special:ItemByTitle page isn't available anymore. Everything else works. - I use this to create new data items, because you get a search for existing ones and in case of not existing you get a link to create it, including sitelink set. But I found a workaround (or shortcut) by Special:NewItem in combination with "&site=wiki&page=Key or Tag pagename" ( index.php?title=Special:NewItem&site=wiki&page=Key:... ) so there's no huge hurry.