==== Error ====
* service.version: 1.41.0-wmf.30
* trace.id: 1c996f933eac40cde5d84a80
* [[ https://logstash.wikimedia.org/app/dashboards#/view/AXFV7JE83bOlOASGccsT?_g=(time:(from:'2023-10-09T12:15:12.070Z',to:'2023-10-10T12:20:27.955Z'))&_a=(query:(query_string:(query:'reqId:%221c996f933eac40cde5d84a80%22'))) | Find trace.id in Logstash ]]
```name=labels.normalized_message,lines=10
[1c996f933eac40cde5d84a80] [no req] Less_Exception_Compiler: variable @min-width-desktop-wide is undefined in file /srv/mediawiki/php-1.41.0-wmf.30/skins/Vector/skinStyles/ext.echo.styles.alert.less in ext.echo.styles.alert.less on line 22, column 23
20
```
```name=error.stack_trace,lines=10
from /srv/mediawiki/php-1.41.0-wmf.30/vendor/wikimedia/less.php/lib/Less/Tree/Variable.php(53)
#0 /srv/mediawiki/php-1.41.0-wmf.30/vendor/wikimedia/less.php/lib/Less/Tree/Expression.php(46): Less_Tree_Variable->compile(Less_Environment)
#1 /srv/mediawiki/php-1.41.0-wmf.30/vendor/wikimedia/less.php/lib/Less/Tree/Value.php(25): Less_Tree_Expression->compile(Less_Environment)
#2 /srv/mediawiki/php-1.41.0-wmf.30/vendor/wikimedia/less.php/lib/Less/Tree/Rule.php(83): Less_Tree_Value->compile(Less_Environment)
#3 /srv/mediawiki/php-1.41.0-wmf.30/vendor/wikimedia/less.php/lib/Less/Tree/Paren.php(32): Less_Tree_Rule->compile(Less_Environment)
#4 /srv/mediawiki/php-1.41.0-wmf.30/vendor/wikimedia/less.php/lib/Less/Tree/Expression.php(46): Less_Tree_Paren->compile(Less_Environment)
#5 /srv/mediawiki/php-1.41.0-wmf.30/vendor/wikimedia/less.php/lib/Less/Tree/Value.php(25): Less_Tree_Expression->compile(Less_Environment)
#6 /srv/mediawiki/php-1.41.0-wmf.30/vendor/wikimedia/less.php/lib/Less/Tree/Media.php(54): Less_Tree_Value->compile(Less_Environment)
#7 /srv/mediawiki/php-1.41.0-wmf.30/vendor/wikimedia/less.php/lib/Less/Tree/Ruleset.php(95): Less_Tree_Media->compile(Less_Environment)
#8 /srv/mediawiki/php-1.41.0-wmf.30/vendor/wikimedia/less.php/lib/Less/Tree/Ruleset.php(95): Less_Tree_Ruleset->compile(Less_Environment)
#9 /srv/mediawiki/php-1.41.0-wmf.30/vendor/wikimedia/less.php/lib/Less/Tree/Ruleset.php(95): Less_Tree_Ruleset->compile(Less_Environment)
#10 /srv/mediawiki/php-1.41.0-wmf.30/vendor/wikimedia/less.php/lib/Less/Parser.php(181): Less_Tree_Ruleset->compile(Less_Environment)
#11 /srv/mediawiki/php-1.41.0-wmf.30/includes/ResourceLoader/FileModule.php(1130): Less_Parser->getCss()
#12 /srv/mediawiki/php-1.41.0-wmf.30/includes/ResourceLoader/FileModule.php(1013): MediaWiki\ResourceLoader\FileModule->compileLessString(string, string, MediaWiki\ResourceLoader\DerivativeContext)
#13 /srv/mediawiki/php-1.41.0-wmf.30/includes/ResourceLoader/FileModule.php(989): MediaWiki\ResourceLoader\FileModule->processStyle(string, string, MediaWiki\ResourceLoader\FilePath, MediaWiki\ResourceLoader\DerivativeContext)
#14 /srv/mediawiki/php-1.41.0-wmf.30/includes/ResourceLoader/FileModule.php(967): MediaWiki\ResourceLoader\FileModule->readStyleFile(MediaWiki\ResourceLoader\FilePath, MediaWiki\ResourceLoader\DerivativeContext)
#15 /srv/mediawiki/php-1.41.0-wmf.30/includes/ResourceLoader/FileModule.php(406): MediaWiki\ResourceLoader\FileModule->readStyleFiles(array, MediaWiki\ResourceLoader\DerivativeContext)
#16 /srv/mediawiki/php-1.41.0-wmf.30/includes/ResourceLoader/Module.php(860): MediaWiki\ResourceLoader\FileModule->getStyles(MediaWiki\ResourceLoader\DerivativeContext)
#17 /srv/mediawiki/php-1.41.0-wmf.30/includes/ResourceLoader/Module.php(819): MediaWiki\ResourceLoader\Module->buildContent(MediaWiki\ResourceLoader\DerivativeContext)
#18 /srv/mediawiki/php-1.41.0-wmf.30/includes/ResourceLoader/ResourceLoader.php(1258): MediaWiki\ResourceLoader\Module->getModuleContent(MediaWiki\ResourceLoader\DerivativeContext)
#19 /srv/mediawiki/php-1.41.0-wmf.30/includes/ResourceLoader/ResourceLoader.php(1178): MediaWiki\ResourceLoader\ResourceLoader->addOneModuleResponse(MediaWiki\ResourceLoader\DerivativeContext, Wikimedia\Minify\IdentityMinifierState, string, MediaWiki\ResourceLoader\FileModule, array)
#20 /srv/mediawiki/php-1.41.0-wmf.30/includes/ResourceLoader/ResourceLoader.php(1111): MediaWiki\ResourceLoader\ResourceLoader->getOneModuleResponse(MediaWiki\ResourceLoader\DerivativeContext, string, MediaWiki\ResourceLoader\FileModule)
#21 /srv/mediawiki/php-1.41.0-wmf.30/extensions/WikimediaMaintenance/blameStartupRegistry.php(141): MediaWiki\ResourceLoader\ResourceLoader->makeModuleResponse(MediaWiki\ResourceLoader\DerivativeContext, array)
#22 /srv/mediawiki/php-1.41.0-wmf.30/maintenance/includes/MaintenanceRunner.php(703): BlameStartupRegistry->execute()
#23 /srv/mediawiki/php-1.41.0-wmf.30/maintenance/run.php(51): MediaWiki\Maintenance\MaintenanceRunner->run()
#24 /srv/mediawiki/multiversion/MWScript.php(159): require_once(string)
#25 {main}
```
==== Impact ====
==== Notes ====
That has originates from mwmaint2002 when running #mediawiki-extensions-wikimediamaintenance script `blameStartupRegistry.php`.
I don't know how the less variable `@min-width-desktop-wide` ends up not being defined, but that looks like something that should be caught by CI ahead of time?