==== Error ====
* service.version: 1.43.0-wmf.8
* trace.id: 8b672c83-b9b0-4217-9374-b57d2778ad7c
* [[ https://logstash.wikimedia.org/app/dashboards#/view/AXFV7JE83bOlOASGccsT?_g=(time:(from:'2024-06-08T20:08:59.118Z',to:'2024-06-10T20:08:59.118Z'))&_a=(query:(query_string:(query:'reqId:%228b672c83-b9b0-4217-9374-b57d2778ad7c%22'))) | Find trace.id in Logstash ]]
```name=labels.normalized_message,lines=10
[{reqId}] {exception_url} PHP Notice: Undefined index: dataformat
```
```name=error.stack_trace,lines=10
from /srv/mediawiki/php-1.43.0-wmf.8/extensions/TimedMediaHandler/includes/Handlers/WebMHandler/WebMHandler.php(144)
#0 /srv/mediawiki/php-1.43.0-wmf.8/extensions/TimedMediaHandler/includes/Handlers/WebMHandler/WebMHandler.php(144): MWExceptionHandler::handleError(integer, string, string, integer, array)
#1 /srv/mediawiki/php-1.43.0-wmf.8/extensions/TimedMediaHandler/includes/Handlers/WebMHandler/WebMHandler.php(109): MediaWiki\TimedMediaHandler\Handlers\WebMHandler\WebMHandler->getStreamTypes(OldLocalFile)
#2 /srv/mediawiki/php-1.43.0-wmf.8/extensions/TimedMediaHandler/includes/WebVideoTranscode/WebVideoTranscode.php(1155): MediaWiki\TimedMediaHandler\Handlers\WebMHandler\WebMHandler->getWebType(OldLocalFile)
#3 /srv/mediawiki/php-1.43.0-wmf.8/extensions/TimedMediaHandler/includes/WebVideoTranscode/WebVideoTranscode.php(865): MediaWiki\TimedMediaHandler\WebVideoTranscode\WebVideoTranscode::getPrimarySourceAttributes(OldLocalFile, array)
#4 /srv/mediawiki/php-1.43.0-wmf.8/extensions/TimedMediaHandler/includes/WebVideoTranscode/WebVideoTranscode.php(769): MediaWiki\TimedMediaHandler\WebVideoTranscode\WebVideoTranscode::getLocalSources(OldLocalFile, array)
#5 /srv/mediawiki/php-1.43.0-wmf.8/extensions/TimedMediaHandler/includes/TimedMediaTransformOutput.php(520): MediaWiki\TimedMediaHandler\WebVideoTranscode\WebVideoTranscode::getSources(OldLocalFile)
#6 /srv/mediawiki/php-1.43.0-wmf.8/extensions/TimedMediaHandler/includes/TimedMediaTransformOutput.php(321): MediaWiki\TimedMediaHandler\TimedMediaTransformOutput->getMediaSources()
#7 /srv/mediawiki/php-1.43.0-wmf.8/extensions/TimedMediaHandler/includes/TimedMediaTransformOutput.php(201): MediaWiki\TimedMediaHandler\TimedMediaTransformOutput->getHtmlMediaTagOutput(array)
#8 /srv/mediawiki/php-1.43.0-wmf.8/includes/page/ImageHistoryList.php(330): MediaWiki\TimedMediaHandler\TimedMediaTransformOutput->toHtml(array)
#9 /srv/mediawiki/php-1.43.0-wmf.8/includes/page/ImageHistoryList.php(249): ImageHistoryList->getThumbForLine(OldLocalFile, boolean)
#10 /srv/mediawiki/php-1.43.0-wmf.8/includes/page/ImageHistoryPseudoPager.php(161): ImageHistoryList->imageHistoryLine(boolean, OldLocalFile, string)
#11 /srv/mediawiki/php-1.43.0-wmf.8/includes/page/ImagePage.php(857): ImageHistoryPseudoPager->getBody()
#12 /srv/mediawiki/php-1.43.0-wmf.8/includes/page/ImagePage.php(182): ImagePage->imageHistory()
#13 /srv/mediawiki/php-1.43.0-wmf.8/includes/actions/ViewAction.php(78): ImagePage->view()
#14 /srv/mediawiki/php-1.43.0-wmf.8/includes/actions/ActionEntryPoint.php(731): ViewAction->show()
#15 /srv/mediawiki/php-1.43.0-wmf.8/includes/actions/ActionEntryPoint.php(508): MediaWiki\Actions\ActionEntryPoint->performAction(ImagePage, MediaWiki\Title\Title)
#16 /srv/mediawiki/php-1.43.0-wmf.8/includes/actions/ActionEntryPoint.php(145): MediaWiki\Actions\ActionEntryPoint->performRequest()
#17 /srv/mediawiki/php-1.43.0-wmf.8/includes/MediaWikiEntryPoint.php(200): MediaWiki\Actions\ActionEntryPoint->execute()
#18 /srv/mediawiki/php-1.43.0-wmf.8/index.php(58): MediaWiki\MediaWikiEntryPoint->run()
#19 /srv/mediawiki/w/index.php(3): require(string)
#20 {main}
```
==== Impact ====
Unclear.
==== Notes ====
Noticed these while deploy 1.43.0-wmf.9 (T361403), but they go back at least to wmf.7.
See logstash for specific examples.