Description
If a CheckUser tries to access the "Special:Contributions" page to see contribution of an IP on the Russian Wikipedia, an error message is displayed.
How to reproduce
For example, if a CheckUser clicks on the following link: https://ru.wikipedia.org/wiki/Special:Contributions/212.74.203.83 an error message e.g. "[446c004b-6c34-4901-89da-84c3b5ecd4bd] 2025-12-18 22:24:43: Неустранимое исключение типа «BadMethodCallException»" will be displayed (see the first screenshot).
Using an account without CheckUser right (or without logging in at all) will get the following correctly displayed page with the IP's contribution (see the second screenshot).
Additional information
This issue is quite new - it has appeared just a couple of hours ago.
It looks like only the accounts of CheckUsers are affected by this issue. Perhaps the issue is somehow tied to the "global-temporary-account-viewer" right.
I was able to reproduce the issue from my main account User:Q-bit array on the Russian Wikipedia using different browsers (Chrome, Firefox) and from different devices (desktop + mobile). Also tried to clean the browser's cache and delete all cookies. Another CheckUsers of the Russian Wikipedia are also affected.
I've decided to create a security task because it is a blocking issue for all CheckUsers of the Russian Wikipedia and we don't want that our LTAs know that the CUs can't work properly because of it!
BadMethodCallException: MediaWiki\User\TempUser\RealTempUserConfig::getMatchCondition is disabled
from /srv/mediawiki/php-1.46.0-wmf.7/includes/User/TempUser/RealTempUserConfig.php(197)
#0 /srv/mediawiki/php-1.46.0-wmf.7/extensions/CheckUser/src/Services/CheckUserTemporaryAccountsByIPLookup.php(146): MediaWiki\User\TempUser\RealTempUserConfig->getMatchCondition(Wikimedia\Rdbms\DBConnRef, string, string)
#1 /srv/mediawiki/php-1.46.0-wmf.7/extensions/CheckUser/src/Services/CheckUserTemporaryAccountsByIPLookup.php(94): MediaWiki\CheckUser\Services\CheckUserTemporaryAccountsByIPLookup->getTempAccountsFromIPAddress(string, int)
#2 /srv/mediawiki/php-1.46.0-wmf.7/extensions/CheckUser/src/HookHandler/SpecialContributionsBeforeMainOutputHandler.php(102): MediaWiki\CheckUser\Services\CheckUserTemporaryAccountsByIPLookup->get(string, MediaWiki\User\User, bool, int)
#3 /srv/mediawiki/php-1.46.0-wmf.7/extensions/CheckUser/src/HookHandler/SpecialContributionsBeforeMainOutputHandler.php(40): MediaWiki\CheckUser\HookHandler\SpecialContributionsBeforeMainOutputHandler->addCountFromThisIPSubtitle(string, MediaWiki\Specials\SpecialContributions)
#4 /srv/mediawiki/php-1.46.0-wmf.7/includes/HookContainer/HookContainer.php(134): MediaWiki\CheckUser\HookHandler\SpecialContributionsBeforeMainOutputHandler->onSpecialContributionsBeforeMainOutput(int, MediaWiki\User\User, MediaWiki\Specials\SpecialContributions)
#5 /srv/mediawiki/php-1.46.0-wmf.7/includes/HookContainer/HookRunner.php(4114): MediaWiki\HookContainer\HookContainer->run(string, array)
#6 /srv/mediawiki/php-1.46.0-wmf.7/includes/SpecialPage/ContributionsSpecialPage.php(327): MediaWiki\HookContainer\HookRunner->onSpecialContributionsBeforeMainOutput(int, MediaWiki\User\User, MediaWiki\Specials\SpecialContributions)
#7 /srv/mediawiki/php-1.46.0-wmf.7/includes/SpecialPage/SpecialPage.php(711): MediaWiki\SpecialPage\ContributionsSpecialPage->execute(string)
#8 /srv/mediawiki/php-1.46.0-wmf.7/includes/SpecialPage/SpecialPageFactory.php(1744): MediaWiki\SpecialPage\SpecialPage->run(string)
#9 /srv/mediawiki/php-1.46.0-wmf.7/includes/Actions/ActionEntryPoint.php(504): MediaWiki\SpecialPage\SpecialPageFactory->executePath(string, MediaWiki\Context\RequestContext)
#10 /srv/mediawiki/php-1.46.0-wmf.7/includes/Actions/ActionEntryPoint.php(144): MediaWiki\Actions\ActionEntryPoint->performRequest()
#11 /srv/mediawiki/php-1.46.0-wmf.7/includes/MediaWikiEntryPoint.php(181): MediaWiki\Actions\ActionEntryPoint->execute()
#12 /srv/mediawiki/php-1.46.0-wmf.7/index.php(44): MediaWiki\MediaWikiEntryPoint->run()
#13 /srv/mediawiki/w/index.php(3): require(string)
#14 {main}