I have seen this couple of times when running message cache rebuild. Possibly only happens when some cache is expired together with expired localisation cache.
```
RuntimeException from line 448 of /www/dev.translatewiki.net/docroot/w/includes/libs/services/ServiceContainer.php: Circular dependency when creating service! ResourceLoader -> ResourceLoader
#0 /www/dev.translatewiki.net/docroot/w/includes/libs/services/ServiceContainer.php(427): Wikimedia\Services\ServiceContainer->createService('ResourceLoader')
#1 /www/dev.translatewiki.net/docroot/w/includes/MediaWikiServices.php(865919): Wikimedia\Services\ServiceContainer->getService('ResourceLoader')
#2 /www/dev.translatewiki.net/docroot/w/includes/cache/localisation/LocalisationCacheServiceWiring.php(1041336): MediaWiki\MediaWikiServices->getResourceLoader()
#3 /www/dev.translatewiki.net/docroot/w/includes/cache/localisation/LocalisationCache.php(463): LocalisationCache->recache('en'1049): Wikimedia\Services\ServiceContainer->{closure}()
#4 /www/dev.translatewiki.net/docroot/w/includes/cache/localisation/LocalisationCache.php(337489): LocalisationCache->initLanguagrecache('en')
#5 /www/dev.translatewiki.net/docroot/w/includes/cache/localisation/LocalisationCache.php(278363): LocalisationCache->loadItem('en', 'namespaceGender...'initLanguage('en')
#6 /www/dev.translatewiki.net/docroot/w/languages/Languagincludes/cache/localisation/LocalisationCache.php(643304): LocalisationCache->getloadItem('en', 'namespaceGender...')
#7 /www/dev.translatewiki.net/docroot/w/includes/title/MediaWikiTitleCodec.php(101): Language->needsGenderDistinction(languages/Language.php(615): LocalisationCache->getItem('en', 'namespaceGender...')
#8 /www/dev.translatewiki.net/docroot/w/includes/title/MediaWikiTitleCodec.php(138): MediaWikiTitleCodec->getNamespaceName(8, 'Gadgets-definit...'01): Language->needsGenderDistinction()
#9 /www/dev.translatewiki.net/docroot/w/includes/title/MediaWikiTitleCodec.php(265138): MediaWikiTitleCodec->formatTitle(8getNamespaceName(8, 'Gadgets-definit...', '', '')
#10 /www/dev.translatewiki.net/docroot/w/includes/cache/LinkCachetitle/MediaWikiTitleCodec.php(24560): MediaWikiTitleCodec->getPrefixedDBkey(Object(Title)formatTitle(8, 'Gadgets-definit...', '', '')
#11 /www/dev.translatewiki.net/docroot/w/includes/Titlcache/LinkCache.php(3040): LinkCache->addLinkObj246): MediaWikiTitleCodec->getPrefixedDBkey(Object(Title))
#12 /www/dev.translatewiki.net/docroot/w/includes/Revision/RevisionRecord.php(109): Title->getArticleID(Title.php(3182): LinkCache->addLinkObj(Object(Title))
#13 /www/dev.translatewiki.net/docroot/w/includes/Revision/RevisionStoreRecord.php(64): MediaWiki\Revision\RevisionRecord->__construct(Object(Title), Object(MediaWiki\Revision\RevisionSlots), falseRecord.php(109): Title->getArticleID()
#14 /www/dev.translatewiki.net/docroot/w/includes/Revision/RevisionStore.php(1874): MediaWiki\Revision\RevisionStoreRecord->__construct(Object(Title), Object(User), Object(CommentStoreComment), Object(stdClassRecord.php(64): MediaWiki\Revision\RevisionRecord->__construct(Object(Title), Object(MediaWiki\Revision\RevisionSlots), false)
#15 /www/dev.translatewiki.net/docroot/w/includes/Revision/RevisionStore.php(180093): MediaWiki\Revision\RevisionStore->newRevisionFromRowAndSlots(Record->__construct(Object(Title), Object(stdClassUser), NULLObject(CommentStoreComment), 0Object(stdClass), Object(TitleMediaWiki\Revision\RevisionSlots), false)
#16 /www/dev.translatewiki.net/docroot/w/includes/Revision/RevisionStore.php(22141816): MediaWiki\Revision\RevisionStore->newRevisionFromRowAndSlots(Object(stdClassass), Object(MediaWiki\Revision\RevisionSlots), 0, Object(Title), Object(Title)false)
#17 /www/dev.translatewiki.net/docroot/w/includes/Revision/RevisionStore.php(15172538): MediaWiki\Revision\RevisionStore->loadnewRevisionFromCondsRow(Object(Wikimedia\Rdbms\DBConnRef), ArraystdClass), 0, Object(Title))
#18 /www/dev.translatewiki.net/docroot/w/includes/Revision/RevisionStore.php(138513): MediaWiki\Revision\RevisionStore->getloadRevisionByTitleFromConds(Object(Title)Wikimedia\Rdbms\DBConnRef), Array, 0, 0Object(Title))
#19 /www/dev.translatewiki.net/docroot/w/extensions/Gadgets/includes/includes/Revision.php(139): MediaWikiGadgetsDefinitionRepo.php(139): \Revision\RevisionStore->getRevision::newFromnByTitle(Object(Title), 0, 0)
#20 /www/dev.translatewiki.net/docroot/w/extensions/Gadgets/includes/MediaWikiGadgetsDefinitionRepo.php(108): MediaWikiGadgetsDefinitionRepo->fetchStructuredList(39): Revision::newFromTitle(Object(Title))
#21 /www/dev.translatewiki.net/docroot/w/includes/libs/objectcache/wancache/WANObjectCache.php(1417): MediaWikiGadgetsDefinitionRepo->{closure}(Array, 86400, Array, 1566897295.2068extensions/Gadgets/includes/MediaWikiGadgetsDefinitionRepo.php(108): MediaWikiGadgetsDefinitionRepo->fetchStructuredList()
#22 /www/dev.translatewiki.net/docroot/w/includes/libs/objectcache/wancache/WANObjectCache.php(1272): WANObjectCache->fetchOrRegenerate('sw:gadgets-defi...'424): MediaWikiGadgetsDefinitionRepo->{closure}(false, 86400, Object(Closure)Array, ArrayNULL)
#23 /www/dev.translatewiki.net/docroot/w/extensions/Gadgets/includes/MediaWikiGadgetsDefinitionRepoincludes/libs/objectcache/wancache/WANObjectCache.php(115278): WANObjectCache->getWithSetCallbackfetchOrRegenerate('sw:gadgets-defi...', 86400, Object(Closure), Array)
#24 /www/dev.translatewiki.net/docroot/w/extensions/Gadgets/includes/MediaWikiGadgetsDefinitionRepo.php(31): MediaWikiG115): WANObjectCache->getWithSetCallback('sw:gadgetsDefinitionRepo->loadGadgets(-defi...', 86400, Object(Closure), Array)
#25 /www/dev.translatewiki.net/docroot/w/extensions/Gadgets/includes/MediaWikiGadgetHooksetsDefinitionRepo.php(13431): MediaWikiGadgetsDefinitionRepo->getloadGadgetIdss()
#26 /www/dev.translatewiki.net/docroot/w/extensions/Gadgets/includes/GadgetHooks.php(1734): GadgetHooks::registerModules(Object(ResourceLoader)MediaWikiGadgetsDefinitionRepo->getGadgetIds()
#27 /www/dev.translatewiki.net/docroot/w/includes/Hooks.php(202): Hooks::call174): GadgetHook('ResourceLoaderR...', Array, Array, NULLs::registerModules(Object(ResourceLoader))
#28 /www/dev.translatewiki.net/docroot/w/includes/ServiceWiringHooks.php(590202): Hooks::runcallHook('ResourceLoaderR...', Array, Array, ArrayNULL)
#29 /www/dev.translatewiki.net/docroot/w/includes/libs/services/ServiceContainerWiring.php(458): Wikimedia\Services\ServiceContainer->{closure}(Object(MediaWiki\MediaWikiServices)703): Hooks::run('ResourceLoaderR...', Array)
#30 /www/dev.translatewiki.net/docroot/w/includes/libs/services/ServiceContainer.php(42758): Wikimedia\Services\ServiceContainer->createService('ResourceLoader'{closure}(Object(MediaWiki\MediaWikiServices))
#31 /www/dev.translatewiki.net/docroot/w/includes/MediaWikilibs/services/ServiceseContainer.php(865427): Wikimedia\Services\ServiceContainer->getcreateService('ResourceLoader')
#32 /www/dev.translatewiki.net/docroot/w/includes/cache/localisation/LocalisationCacheMediaWikiServices.php(1041): MediaWiki\MediaWiki919): Wikimedia\Services\ServiceseContainer->getService('ResourceLoader(')
#33 /www/dev.translatewiki.net/docroot/w/includes/cache/localisation/maintenance/rebuildLocalisationCacheBulkLoad.php(100): LocalisationCache->recache('tay'98): MediaWiki\MediaWikiServices->getResourceLoader()
#34 /www/dev.translatewiki.net/docroot/w/maintenance/rebuildincludes/cache/localisation/LocalisationCache.php(162): 049): RebuildLocalisationCacheBulkLoad->recache('tay'->{closure}()
#35 /www/dev.translatewiki.net/docroot/w/maintenance/rebuildLocalisationCache.php(118): RebuildLocalisationCache->doRebuild(Array, Object(LocalisationCacheBulkLoad), falseincludes/cache/localisation/LocalisationCacheBulkLoad.php(100): LocalisationCache->recache('ab')
#36 /www/dev.translatewiki.net/docroot/w/maintenance/doMaintenancrebuildLocalisationCache.php(99): Rebuild178): LocalisationCache->execute(BulkLoad->recache('ab')
#37 /www/dev.translatewiki.net/docroot/w/maintenance/rebuildLocalisationCache.php(181): require_once('/www/dev.transl...'34): RebuildLocalisationCache->doRebuild(Array, Object(LocalisationCacheBulkLoad), false)
#38 /www/dev.translatewiki.net/docroot/w/maintenance/doMaintenance.php(99): RebuildLocalisationCache->execute()
#39 /www/dev.translatewiki.net/docroot/w/maintenance/rebuildLocalisationCache.php(197): require_once('/www/dev.transl...')
#40 {main}
```