==== Error ====
* mwversion: 1.44.0-wmf.14
* reqId: `04d8da2b-8202-4823-bd1d-6cff30b4bb44`
* [[ https://logstash.wikimedia.org/app/dashboards#/view/AXFV7JE83bOlOASGccsT?_g=(time:(from:'2025-01-30T17:48:14.129Z',to:'2025-01-31T21:19:41.983Z'))&_a=(query:(query_string:(query:'reqId:%2204d8da2b-8202-4823-bd1d-6cff30b4bb44%22'))) | Find reqId in Logstash ]]
```name=normalized_message,lines=10
[{reqId}] {exception_url} PHP Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated
```
| Frame | Location | Call
| -- | -- | --
| from | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/language/Language.php#1839 | /srv/mediawiki/php-1.44.0-wmf.14/includes/language/Language.php(1839) ]] |
| #0 | [internal function] | MWExceptionHandler::handleError(int, string, string, int)
| #1 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/language/Language.php#1839 | /srv/mediawiki/php-1.44.0-wmf.14/includes/language/Language.php(1839) ]] | preg_match(string, null, null)
| #2 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/language/Language.php#3992 | /srv/mediawiki/php-1.44.0-wmf.14/includes/language/Language.php(3992) ]] | MediaWiki\Language\Language::strongDirFromContent(null)
| #3 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Flow/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/Notifications/FlowPresentationModel.php#142 | /srv/mediawiki/php-1.44.0-wmf.14/extensions/Flow/includes/Notifications/FlowPresentationModel.php(142) ]] | MediaWiki\Language\Language->embedBidi(null)
| #4 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Flow/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/Notifications/FlowPresentationModel.php#133 | /srv/mediawiki/php-1.44.0-wmf.14/extensions/Flow/includes/Notifications/FlowPresentationModel.php(133) ]] | Flow\Notifications\FlowPresentationModel->truncateTopicTitle(null)
| #5 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Flow/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/Notifications/FlowPresentationModel.php#171 | /srv/mediawiki/php-1.44.0-wmf.14/extensions/Flow/includes/Notifications/FlowPresentationModel.php(171) ]] | Flow\Notifications\FlowPresentationModel->getTopicTitle()
| #6 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Flow/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/Notifications/TopicRenamedPresentationModel.php#42 | /srv/mediawiki/php-1.44.0-wmf.14/extensions/Flow/includes/Notifications/TopicRenamedPresentationModel.php(42) ]] | Flow\Notifications\FlowPresentationModel->getFlowUnwatchDynamicActionLink(bool)
| #7 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Echo/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/Formatters/EchoEventPresentationModel.php#561 | /srv/mediawiki/php-1.44.0-wmf.14/extensions/Echo/includes/Formatters/EchoEventPresentationModel.php(561) ]] | Flow\Notifications\TopicRenamedPresentationModel->getSecondaryLinks()
| #8 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Echo/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/Formatters/EchoModelFormatter.php#15 | /srv/mediawiki/php-1.44.0-wmf.14/extensions/Echo/includes/Formatters/EchoModelFormatter.php(15) ]] | MediaWiki\Extension\Notifications\Formatters\EchoEventPresentationModel->jsonSerialize()
| #9 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Echo/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/Formatters/EchoEventFormatter.php#77 | /srv/mediawiki/php-1.44.0-wmf.14/extensions/Echo/includes/Formatters/EchoEventFormatter.php(77) ]] | MediaWiki\Extension\Notifications\Formatters\EchoModelFormatter->formatModel(Flow\Notifications\TopicRenamedPresentationModel)
| #10 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Echo/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/DataOutputFormatter.php#205 | /srv/mediawiki/php-1.44.0-wmf.14/extensions/Echo/includes/DataOutputFormatter.php(205) ]] | MediaWiki\Extension\Notifications\Formatters\EchoEventFormatter->format(MediaWiki\Extension\Notifications\Model\Event)
| #11 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Echo/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/DataOutputFormatter.php#164 | /srv/mediawiki/php-1.44.0-wmf.14/extensions/Echo/includes/DataOutputFormatter.php(164) ]] | MediaWiki\Extension\Notifications\DataOutputFormatter::formatNotification(MediaWiki\Extension\Notifications\Model\Event, MediaWiki\User\User, string, MediaWiki\Language\Language)
| #12 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Echo/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/Api/ApiEchoNotifications.php#324 | /srv/mediawiki/php-1.44.0-wmf.14/extensions/Echo/includes/Api/ApiEchoNotifications.php(324) ]] | MediaWiki\Extension\Notifications\DataOutputFormatter::formatOutput(MediaWiki\Extension\Notifications\Model\Notification, string, MediaWiki\User\User, MediaWiki\Language\Language)
| #13 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Echo/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/Api/ApiEchoNotifications.php#137 | /srv/mediawiki/php-1.44.0-wmf.14/extensions/Echo/includes/Api/ApiEchoNotifications.php(137) ]] | MediaWiki\Extension\Notifications\Api\ApiEchoNotifications->getPropList(MediaWiki\User\User, array, array, int, null, string, null, bool, bool)
| #14 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Echo/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/Api/ApiEchoNotifications.php#67 | /srv/mediawiki/php-1.44.0-wmf.14/extensions/Echo/includes/Api/ApiEchoNotifications.php(67) ]] | MediaWiki\Extension\Notifications\Api\ApiEchoNotifications->getLocalNotifications(array)
| #15 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/api/ApiQuery.php#727 | /srv/mediawiki/php-1.44.0-wmf.14/includes/api/ApiQuery.php(727) ]] | MediaWiki\Extension\Notifications\Api\ApiEchoNotifications->execute()
| #16 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/api/ApiMain.php#1973 | /srv/mediawiki/php-1.44.0-wmf.14/includes/api/ApiMain.php(1973) ]] | MediaWiki\Api\ApiQuery->execute()
| #17 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/api/ApiMain.php#941 | /srv/mediawiki/php-1.44.0-wmf.14/includes/api/ApiMain.php(941) ]] | MediaWiki\Api\ApiMain->executeAction()
| #18 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/api/ApiMain.php#912 | /srv/mediawiki/php-1.44.0-wmf.14/includes/api/ApiMain.php(912) ]] | MediaWiki\Api\ApiMain->executeActionWithErrorHandling()
| #19 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/api/ApiEntryPoint.php#152 | /srv/mediawiki/php-1.44.0-wmf.14/includes/api/ApiEntryPoint.php(152) ]] | MediaWiki\Api\ApiMain->execute()
| #20 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+blame/refs/heads/wmf/1.44.0-wmf.14/includes/MediaWikiEntryPoint.php#202 | /srv/mediawiki/php-1.44.0-wmf.14/includes/MediaWikiEntryPoint.php(202) ]] | MediaWiki\Api\ApiEntryPoint->execute()
| #21 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+blame/refs/heads/wmf/1.44.0-wmf.14/api.php#44 | /srv/mediawiki/php-1.44.0-wmf.14/api.php(44) ]] | MediaWiki\MediaWikiEntryPoint->run()
| #22 | [[ https://gerrit.wikimedia.org/r/plugins/gitiles/operations/mediawiki-config/+blame/refs/heads/master/w/api.php#3 | /srv/mediawiki/w/api.php(3) ]] | require(string)
| #23 | {main} |
==== Impact ====
==== Notes ====