array(1) {
  ["error"]=>
  array(3) {
    ["code"]=>
    string(36) "internal_api_error_DBConnectionError"
    ["info"]=>
    string(135) "Exception Caught: DB connection error: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (111) (localhost)"
    ["*"]=>
    string(1680) "

#0 /usr/share/mediawiki123/includes/db/LoadBalancer.php(754): DatabaseBase->reportConnectionError('Unknown error (...')
#1 /usr/share/mediawiki123/includes/db/LoadBalancer.php(477): LoadBalancer->reportConnectionError()
#2 /usr/share/mediawiki123/includes/GlobalFunctions.php(3709): LoadBalancer->getConnection(-1, Array, false)
#3 /usr/share/mediawiki123/includes/cache/LocalisationCache.php(1159): wfGetDB(-1)
#4 /usr/share/mediawiki123/includes/cache/LocalisationCache.php(404): LCStoreDB->get('hu', 'deps')
#5 /usr/share/mediawiki123/includes/cache/LocalisationCache.php(450): LocalisationCache->isExpired('hu')
#6 /usr/share/mediawiki123/includes/cache/LocalisationCache.php(326): LocalisationCache->initLanguage('hu')
#7 /usr/share/mediawiki123/includes/cache/LocalisationCache.php(260): LocalisationCache->loadItem('hu', 'namespaceNames')
#8 /usr/share/mediawiki123/languages/Language.php(516): LocalisationCache->getItem('hu', 'namespaceNames')
#9 /usr/share/mediawiki123/languages/Language.php(573): Language->getNamespaces()
#10 /usr/share/mediawiki123/includes/api/ApiQuerySiteinfo.php(274): Language->getFormattedNamespaces()
#11 /usr/share/mediawiki123/includes/api/ApiQuerySiteinfo.php(48): ApiQuerySiteinfo->appendNamespaces('namespaces')
#12 /usr/share/mediawiki123/includes/api/ApiQuery.php(282): ApiQuerySiteinfo->execute()
#13 /usr/share/mediawiki123/includes/api/ApiMain.php(913): ApiQuery->execute()
#14 /usr/share/mediawiki123/includes/api/ApiMain.php(363): ApiMain->executeAction()
#15 /usr/share/mediawiki123/includes/api/ApiMain.php(334): ApiMain->executeActionWithErrorHandling()
#16 /usr/share/mediawiki123/api.php(85): ApiMain->execute()
#17 {main}

"
  }
}