==== Error ====
* mwversion: 1.41.0-wmf.2
* reqId: c7e9948e8b9aa0b22e7908ab
* [[ https://logstash.wikimedia.org/app/dashboards#/view/AXFV7JE83bOlOASGccsT?_g=(time:(from:'2023-03-28T18:36:29.745Z',to:'2023-03-29T18:37:47.506Z'))&_a=(query:(query_string:(query:'reqId:%22c7e9948e8b9aa0b22e7908ab%22'))) | Find reqId in Logstash ]]
```name=normalized_message,lines=10
[{reqId}] {exception_url} Less_Exception_Parser: File `resources/lib/codex-design-tokens/theme-wikimedia-ui-legacy.less` not found. in interface.less
```
```name=exception.trace,lines=10
from /srv/mediawiki/php-1.41.0-wmf.2/vendor/wikimedia/less.php/lib/Less/Parser.php(2706)
#0 /srv/mediawiki/php-1.41.0-wmf.2/vendor/wikimedia/less.php/lib/Less/Parser.php(433): Less_Parser->Error(string)
#1 /srv/mediawiki/php-1.41.0-wmf.2/vendor/wikimedia/less.php/lib/Less/Tree/Import.php(272): Less_Parser->parseFile(string, string, boolean)
#2 /srv/mediawiki/php-1.41.0-wmf.2/vendor/wikimedia/less.php/lib/Less/Tree/Import.php(196): Less_Tree_Import->ParseImport(string, string, Less_Environment)
#3 /srv/mediawiki/php-1.41.0-wmf.2/vendor/wikimedia/less.php/lib/Less/Tree/Ruleset.php(250): Less_Tree_Import->compile(Less_Environment)
#4 /srv/mediawiki/php-1.41.0-wmf.2/vendor/wikimedia/less.php/lib/Less/Tree/Ruleset.php(238): Less_Tree_Ruleset->evalImports(Less_Environment)
#5 /srv/mediawiki/php-1.41.0-wmf.2/vendor/wikimedia/less.php/lib/Less/Tree/Ruleset.php(75): Less_Tree_Ruleset->PrepareRuleset(Less_Environment)
#6 /srv/mediawiki/php-1.41.0-wmf.2/vendor/wikimedia/less.php/lib/Less/Parser.php(181): Less_Tree_Ruleset->compile(Less_Environment)
#7 /srv/mediawiki/php-1.41.0-wmf.2/includes/ResourceLoader/FileModule.php(1115): Less_Parser->getCss()
#8 /srv/mediawiki/php-1.41.0-wmf.2/includes/ResourceLoader/FileModule.php(998): MediaWiki\ResourceLoader\FileModule->compileLessString(string, string, MediaWiki\ResourceLoader\DerivativeContext)
#9 /srv/mediawiki/php-1.41.0-wmf.2/includes/ResourceLoader/FileModule.php(974): MediaWiki\ResourceLoader\FileModule->processStyle(string, string, MediaWiki\ResourceLoader\FilePath, MediaWiki\ResourceLoader\DerivativeContext)
#10 /srv/mediawiki/php-1.41.0-wmf.2/includes/ResourceLoader/FileModule.php(952): MediaWiki\ResourceLoader\FileModule->readStyleFile(MediaWiki\ResourceLoader\FilePath, MediaWiki\ResourceLoader\DerivativeContext)
#11 /srv/mediawiki/php-1.41.0-wmf.2/includes/ResourceLoader/FileModule.php(390): MediaWiki\ResourceLoader\FileModule->readStyleFiles(array, MediaWiki\ResourceLoader\DerivativeContext)
#12 /srv/mediawiki/php-1.41.0-wmf.2/includes/ResourceLoader/SkinModule.php(456): MediaWiki\ResourceLoader\FileModule->getStyles(MediaWiki\ResourceLoader\DerivativeContext)
#13 /srv/mediawiki/php-1.41.0-wmf.2/includes/ResourceLoader/Module.php(834): MediaWiki\ResourceLoader\SkinModule->getStyles(MediaWiki\ResourceLoader\DerivativeContext)
#14 /srv/mediawiki/php-1.41.0-wmf.2/includes/ResourceLoader/Module.php(786): MediaWiki\ResourceLoader\Module->buildContent(MediaWiki\ResourceLoader\DerivativeContext)
#15 /srv/mediawiki/php-1.41.0-wmf.2/includes/ResourceLoader/ResourceLoader.php(1112): MediaWiki\ResourceLoader\Module->getModuleContent(MediaWiki\ResourceLoader\DerivativeContext)
#16 /srv/mediawiki/php-1.41.0-wmf.2/extensions/WikimediaMaintenance/blameStartupRegistry.php(139): MediaWiki\ResourceLoader\ResourceLoader->makeModuleResponse(MediaWiki\ResourceLoader\DerivativeContext, array)
#17 /srv/mediawiki/php-1.41.0-wmf.2/maintenance/includes/MaintenanceRunner.php(681): BlameStartupRegistry->execute()
#18 /srv/mediawiki/php-1.41.0-wmf.2/maintenance/doMaintenance.php(100): MediaWiki\Maintenance\MaintenanceRunner->run()
#19 /srv/mediawiki/php-1.41.0-wmf.2/extensions/WikimediaMaintenance/blameStartupRegistry.php(336): require_once(string)
#20 /srv/mediawiki/multiversion/MWScript.php(118): require_once(string)
#21 {main}
```
==== Impact ====
A few dozen of these errors following group1 promotion of 1.41.0-wmf2.
==== Notes ====
Possibly related to {T330691}.