MediaWiki internal error.

Original exception: [Zfk3fkNOVUJB@y6xONwaqwAAAAM] /index.php?title=Les_inanim%C3%A9s Wikimedia\Rdbms\DBConnectionError: Cannot access the database: Cannot assign requested address (mysql2.lamp.ods) (mysql2.lamp.ods)
Backtrace:
from /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1513)
#0 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/libs/rdbms/loadbalancer/LoadBalancer.php(991): Wikimedia\Rdbms\LoadBalancer->reportConnectionError()
#1 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/libs/rdbms/loadbalancer/LoadBalancer.php(963): Wikimedia\Rdbms\LoadBalancer->getServerConnection()
#2 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1128): Wikimedia\Rdbms\LoadBalancer->getConnection()
#3 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/GlobalFunctions.php(2229): Wikimedia\Rdbms\LoadBalancer->getMaintenanceConnectionRef()
#4 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/cache/localisation/LCStoreDB.php(57): wfGetDB()
#5 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/cache/localisation/LocalisationCache.php(448): LCStoreDB->get()
#6 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/cache/localisation/LocalisationCache.php(494): LocalisationCache->isExpired()
#7 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/cache/localisation/LocalisationCache.php(370): LocalisationCache->initLanguage()
#8 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/cache/localisation/LocalisationCache.php(311): LocalisationCache->loadItem()
#9 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/language/LanguageFallback.php(106): LocalisationCache->getItem()
#10 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/language/LanguageFactory.php(158): MediaWiki\Languages\LanguageFallback->getAll()
#11 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/language/LanguageFactory.php(116): MediaWiki\Languages\LanguageFactory->newFromCode()
#12 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/ServiceWiring.php(380): MediaWiki\Languages\LanguageFactory->getLanguage()
#13 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/vendor/wikimedia/services/src/ServiceContainer.php(447): Wikimedia\Services\ServiceContainer::{closure}()
#14 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/vendor/wikimedia/services/src/ServiceContainer.php(416): Wikimedia\Services\ServiceContainer->createService()
#15 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/MediaWikiServices.php(279): Wikimedia\Services\ServiceContainer->getService()
#16 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/MediaWikiServices.php(801): MediaWiki\MediaWikiServices->getService()
#17 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/ServiceWiring.php(1712): MediaWiki\MediaWikiServices->getContentLanguage()
#18 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/vendor/wikimedia/services/src/ServiceContainer.php(447): Wikimedia\Services\ServiceContainer::{closure}()
#19 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/vendor/wikimedia/services/src/ServiceContainer.php(416): Wikimedia\Services\ServiceContainer->createService()
#20 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/MediaWikiServices.php(279): Wikimedia\Services\ServiceContainer->getService()
#21 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/MediaWikiServices.php(1688): MediaWiki\MediaWikiServices->getService()
#22 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/session/SessionManager.php(229): MediaWiki\MediaWikiServices->getUserNameUtils()
#23 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/session/SessionManager.php(135): MediaWiki\Session\SessionManager->__construct()
#24 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/Setup.php(762): MediaWiki\Session\SessionManager::singleton()
#25 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/WebStart.php(90): require_once(string)
#26 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/index.php(44): require(string)
#27 {main}

Exception caught inside exception handler: [Zfk3fkNOVUJB@y6xONwaqwAAAAM] /index.php?title=Les_inanim%C3%A9s Wikimedia\Rdbms\DBConnectionError: Cannot access the database: Cannot assign requested address (mysql2.lamp.ods) (mysql2.lamp.ods)
Backtrace:
from /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1513)
#0 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/libs/rdbms/loadbalancer/LoadBalancer.php(991): Wikimedia\Rdbms\LoadBalancer->reportConnectionError()
#1 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/libs/rdbms/loadbalancer/LoadBalancer.php(963): Wikimedia\Rdbms\LoadBalancer->getServerConnection()
#2 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1128): Wikimedia\Rdbms\LoadBalancer->getConnection()
#3 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/GlobalFunctions.php(2229): Wikimedia\Rdbms\LoadBalancer->getMaintenanceConnectionRef()
#4 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/cache/localisation/LCStoreDB.php(57): wfGetDB()
#5 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/cache/localisation/LocalisationCache.php(393): LCStoreDB->get()
#6 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/cache/localisation/LocalisationCache.php(311): LocalisationCache->loadItem()
#7 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/language/LanguageFallback.php(106): LocalisationCache->getItem()
#8 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/language/LanguageFactory.php(158): MediaWiki\Languages\LanguageFallback->getAll()
#9 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/language/LanguageFactory.php(116): MediaWiki\Languages\LanguageFactory->newFromCode()
#10 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/ServiceWiring.php(380): MediaWiki\Languages\LanguageFactory->getLanguage()
#11 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/vendor/wikimedia/services/src/ServiceContainer.php(447): Wikimedia\Services\ServiceContainer::{closure}()
#12 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/vendor/wikimedia/services/src/ServiceContainer.php(416): Wikimedia\Services\ServiceContainer->createService()
#13 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/MediaWikiServices.php(279): Wikimedia\Services\ServiceContainer->getService()
#14 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/MediaWikiServices.php(801): MediaWiki\MediaWikiServices->getService()
#15 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/ServiceWiring.php(922): MediaWiki\MediaWikiServices->getContentLanguage()
#16 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/vendor/wikimedia/services/src/ServiceContainer.php(447): Wikimedia\Services\ServiceContainer::{closure}()
#17 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/vendor/wikimedia/services/src/ServiceContainer.php(416): Wikimedia\Services\ServiceContainer->createService()
#18 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/MediaWikiServices.php(279): Wikimedia\Services\ServiceContainer->getService()
#19 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/MediaWikiServices.php(1180): MediaWiki\MediaWikiServices->getService()
#20 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/exception/MWExceptionRenderer.php(377): MediaWiki\MediaWikiServices->getMessageCache()
#21 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/exception/MWExceptionRenderer.php(75): MWExceptionRenderer::reportOutageHTML()
#22 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/exception/MWExceptionHandler.php(107): MWExceptionRenderer::output()
#23 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/exception/MWExceptionHandler.php(202): MWExceptionHandler::report()
#24 /opt/data/webusers/lab1174/lab1174/arbres.iker.cnrs.fr/www/includes/exception/MWExceptionHandler.php(170): MWExceptionHandler::handleException()
#25 [internal function]: MWExceptionHandler::handleUncaughtException()
#26 {main}