==== Error ====
* [[ https://logstash.wikimedia.org/app/discover#/doc/logstash-*/logstash-deploy-1-7.0.0-1-2024.04.16?id=Iju3544BeyUZP0OuXlty | Logstash single document ]]
```name=message
Invalid username: Contributions/67.159.44.24
```
```name=trace,lines=10
from /srv/mediawiki/php-1.42.0-wmf.26/extensions/CentralAuth/includes/User/CentralAuthUser.php(254)
#0 /srv/mediawiki/php-1.42.0-wmf.26/extensions/CentralAuth/includes/User/CentralAuthUser.php(231): MediaWiki\Extension\CentralAuth\User\CentralAuthUser::getInstanceByName(string)
#1 /srv/mediawiki/php-1.42.0-wmf.26/extensions/GlobalBlocking/includes/GlobalBlockLogFormatter.php(212): MediaWiki\Extension\CentralAuth\User\CentralAuthUser::getInstance(MediaWiki\User\UserIdentityValue)
#2 /srv/mediawiki/php-1.42.0-wmf.26/extensions/GlobalBlocking/includes/GlobalBlockLogFormatter.php(133): MediaWiki\Extension\GlobalBlocking\GlobalBlockLogFormatter->checkAuthorityCanSeeUser(MediaWiki\User\UserIdentityValue)
#3 /srv/mediawiki/php-1.42.0-wmf.26/includes/logging/LogFormatter.php(562): MediaWiki\Extension\GlobalBlocking\GlobalBlockLogFormatter->getMessageParameters()
#4 /srv/mediawiki/php-1.42.0-wmf.26/includes/logging/LogFormatter.php(537): LogFormatter->getActionMessage()
#5 /srv/mediawiki/php-1.42.0-wmf.26/includes/logging/LogEventsList.php(332): LogFormatter->getActionText()
#6 /srv/mediawiki/php-1.42.0-wmf.26/includes/logging/LogPager.php(452): LogEventsList->logLine(stdClass)
#7 /srv/mediawiki/php-1.42.0-wmf.26/includes/pager/ReverseChronologicalPager.php(134): MediaWiki\Pager\LogPager->formatRow(stdClass)
#8 /srv/mediawiki/php-1.42.0-wmf.26/includes/pager/IndexPager.php(594): MediaWiki\Pager\ReverseChronologicalPager->getRow(stdClass)
#9 /srv/mediawiki/php-1.42.0-wmf.26/includes/specials/SpecialLog.php(313): MediaWiki\Pager\IndexPager->getBody()
#10 /srv/mediawiki/php-1.42.0-wmf.26/includes/specials/SpecialLog.php(192): MediaWiki\Specials\SpecialLog->show(MediaWiki\Html\FormOptions, array)
#11 /srv/mediawiki/php-1.42.0-wmf.26/includes/specialpage/SpecialPage.php(718): MediaWiki\Specials\SpecialLog->execute(NULL)
#12 /srv/mediawiki/php-1.42.0-wmf.26/includes/specialpage/SpecialPageFactory.php(1669): MediaWiki\SpecialPage\SpecialPage->run(NULL)
#13 /srv/mediawiki/php-1.42.0-wmf.26/includes/actions/ActionEntryPoint.php(504): MediaWiki\SpecialPage\SpecialPageFactory->executePath(string, MediaWiki\Context\RequestContext)
#14 /srv/mediawiki/php-1.42.0-wmf.26/includes/actions/ActionEntryPoint.php(145): MediaWiki\Actions\ActionEntryPoint->performRequest()
#15 /srv/mediawiki/php-1.42.0-wmf.26/includes/MediaWikiEntryPoint.php(199): MediaWiki\Actions\ActionEntryPoint->execute()
#16 /srv/mediawiki/php-1.42.0-wmf.26/index.php(58): MediaWiki\MediaWikiEntryPoint->run()
#17 /srv/mediawiki/w/index.php(3): require(string)
#18 {main}
```
==== Impact ====
Causes `Special:Log` on `commonswiki` when filtered for #GlobalBlocking log entries to throw an exception.
==== Notes ====
Looks to be caused by this row:
```
+---------+----------+------------+----------------+---------------+----------------------------+----------------+------------+-------------+-----------+----------+
| log_id | log_type | log_action | log_timestamp | log_namespace | log_title | log_comment_id | log_params | log_deleted | log_actor | log_page |
+---------+----------+------------+----------------+---------------+----------------------------+----------------+------------+-------------+-----------+----------+
| 5038622 | gblblock | whitelist | 20080827225222 | -1 | Contributions/67.159.44.24 | 91105968 | | 0 | 455357 | NULL |
+---------+----------+------------+----------------+---------------+----------------------------+----------------+------------+-------------+-----------+----------+
```