<?xml version="1.0"?>
<api>
  <error code="internal_api_error_DBConnectionError" info="Exception Caught: DB connection error: Can&#039;t connect to local MySQL server through socket &#039;/var/lib/mysql/mysql.sock&#039; (111) (localhost)" xml:space="preserve">

#0 /var/www/mediawiki-1.23.0/includes/db/LoadBalancer.php(754): DatabaseBase->reportConnectionError('Unknown error (...')
#1 /var/www/mediawiki-1.23.0/includes/db/LoadBalancer.php(477): LoadBalancer->reportConnectionError()
#2 /var/www/mediawiki-1.23.0/includes/GlobalFunctions.php(3653): LoadBalancer->getConnection(-1, Array, false)
#3 /var/www/mediawiki-1.23.0/includes/ChangeTags.php(314): wfGetDB(-1)
#4 /var/www/mediawiki-1.23.0/includes/api/ApiFeedContributions.php(185): ChangeTags::listDefinedTags()
#5 /var/www/mediawiki-1.23.0/includes/api/ApiBase.php(591): ApiFeedContributions->getAllowedParams(0)
#6 /var/www/mediawiki-1.23.0/includes/api/ApiBase.php(691): ApiBase->getFinalParams()
#7 /var/www/mediawiki-1.23.0/includes/api/ApiMain.php(765): ApiBase->extractRequestParams()
#8 /var/www/mediawiki-1.23.0/includes/api/ApiMain.php(896): ApiMain->setupModule()
#9 /var/www/mediawiki-1.23.0/includes/api/ApiMain.php(363): ApiMain->executeAction()
#10 /var/www/mediawiki-1.23.0/includes/api/ApiMain.php(334): ApiMain->executeActionWithErrorHandling()
#11 /var/www/mediawiki-1.23.0/api.php(85): ApiMain->execute()
#12 {main}

</error>
</api>