MediaWiki internal error.

Original exception: [ZgXJ-ilwHSrSaetBLslIhQAAAEY] /w/index.php?title=FAQ&action=edit&section=21 Wikimedia\Rdbms\DBConnectionError from line 1380 of /home/fedoramd/public_html/mediawiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php: Cannot access the database: Unknown error ()
Backtrace:
#0 /home/fedoramd/public_html/mediawiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(931): Wikimedia\Rdbms\LoadBalancer->reportConnectionError()
#1 /home/fedoramd/public_html/mediawiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(898): Wikimedia\Rdbms\LoadBalancer->getServerConnection()
#2 /home/fedoramd/public_html/mediawiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1043): Wikimedia\Rdbms\LoadBalancer->getConnection()
#3 /home/fedoramd/public_html/mediawiki/includes/GlobalFunctions.php(2556): Wikimedia\Rdbms\LoadBalancer->getMaintenanceConnectionRef()
#4 /home/fedoramd/public_html/mediawiki/includes/cache/localisation/LCStoreDB.php(56): wfGetDB()
#5 /home/fedoramd/public_html/mediawiki/includes/cache/localisation/LocalisationCache.php(441): LCStoreDB->get()
#6 /home/fedoramd/public_html/mediawiki/includes/cache/localisation/LocalisationCache.php(487): LocalisationCache->isExpired()
#7 /home/fedoramd/public_html/mediawiki/includes/cache/localisation/LocalisationCache.php(363): LocalisationCache->initLanguage()
#8 /home/fedoramd/public_html/mediawiki/includes/cache/localisation/LocalisationCache.php(304): LocalisationCache->loadItem()
#9 /home/fedoramd/public_html/mediawiki/languages/Language.php(4413): LocalisationCache->getItem()
#10 /home/fedoramd/public_html/mediawiki/languages/Language.php(265): Language::getFallbacksFor()
#11 /home/fedoramd/public_html/mediawiki/languages/Language.php(225): Language::newFromCode()
#12 /home/fedoramd/public_html/mediawiki/includes/ServiceWiring.php(163): Language::factory()
#13 /home/fedoramd/public_html/mediawiki/includes/libs/services/ServiceContainer.php(458): Wikimedia\Services\ServiceContainer->{closure}()
#14 /home/fedoramd/public_html/mediawiki/includes/libs/services/ServiceContainer.php(427): Wikimedia\Services\ServiceContainer->createService()
#15 /home/fedoramd/public_html/mediawiki/includes/MediaWikiServices.php(540): Wikimedia\Services\ServiceContainer->getService()
#16 /home/fedoramd/public_html/mediawiki/includes/Setup.php(800): MediaWiki\MediaWikiServices->getContentLanguage()
#17 /home/fedoramd/public_html/mediawiki/includes/WebStart.php(81): require_once(string)
#18 /home/fedoramd/public_html/mediawiki/index.php(41): require(string)
#19 {main}

Exception caught inside exception handler: [ZgXJ-ilwHSrSaetBLslIhQAAAEY] /w/index.php?title=FAQ&action=edit&section=21 Wikimedia\Rdbms\DBConnectionError from line 1380 of /home/fedoramd/public_html/mediawiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php: Cannot access the database: Unknown error ()
Backtrace:
#0 /home/fedoramd/public_html/mediawiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(931): Wikimedia\Rdbms\LoadBalancer->reportConnectionError()
#1 /home/fedoramd/public_html/mediawiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(898): Wikimedia\Rdbms\LoadBalancer->getServerConnection()
#2 /home/fedoramd/public_html/mediawiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1043): Wikimedia\Rdbms\LoadBalancer->getConnection()
#3 /home/fedoramd/public_html/mediawiki/includes/GlobalFunctions.php(2556): Wikimedia\Rdbms\LoadBalancer->getMaintenanceConnectionRef()
#4 /home/fedoramd/public_html/mediawiki/includes/cache/localisation/LCStoreDB.php(56): wfGetDB()
#5 /home/fedoramd/public_html/mediawiki/includes/cache/localisation/LocalisationCache.php(386): LCStoreDB->get()
#6 /home/fedoramd/public_html/mediawiki/includes/cache/localisation/LocalisationCache.php(304): LocalisationCache->loadItem()
#7 /home/fedoramd/public_html/mediawiki/languages/Language.php(4413): LocalisationCache->getItem()
#8 /home/fedoramd/public_html/mediawiki/languages/Language.php(265): Language::getFallbacksFor()
#9 /home/fedoramd/public_html/mediawiki/languages/Language.php(225): Language::newFromCode()
#10 /home/fedoramd/public_html/mediawiki/includes/ServiceWiring.php(163): Language::factory()
#11 /home/fedoramd/public_html/mediawiki/includes/libs/services/ServiceContainer.php(458): Wikimedia\Services\ServiceContainer->{closure}()
#12 /home/fedoramd/public_html/mediawiki/includes/libs/services/ServiceContainer.php(427): Wikimedia\Services\ServiceContainer->createService()
#13 /home/fedoramd/public_html/mediawiki/includes/MediaWikiServices.php(540): Wikimedia\Services\ServiceContainer->getService()
#14 /home/fedoramd/public_html/mediawiki/includes/ServiceWiring.php(440): MediaWiki\MediaWikiServices->getContentLanguage()
#15 /home/fedoramd/public_html/mediawiki/includes/libs/services/ServiceContainer.php(458): Wikimedia\Services\ServiceContainer->{closure}()
#16 /home/fedoramd/public_html/mediawiki/includes/libs/services/ServiceContainer.php(427): Wikimedia\Services\ServiceContainer->createService()
#17 /home/fedoramd/public_html/mediawiki/includes/MediaWikiServices.php(738): Wikimedia\Services\ServiceContainer->getService()
#18 /home/fedoramd/public_html/mediawiki/includes/cache/MessageCache.php(115): MediaWiki\MediaWikiServices->getMessageCache()
#19 /home/fedoramd/public_html/mediawiki/includes/exception/MWExceptionRenderer.php(310): MessageCache::singleton()
#20 /home/fedoramd/public_html/mediawiki/includes/exception/MWExceptionRenderer.php(51): MWExceptionRenderer::reportOutageHTML()
#21 /home/fedoramd/public_html/mediawiki/includes/exception/MWExceptionHandler.php(121): MWExceptionRenderer::output()
#22 /home/fedoramd/public_html/mediawiki/includes/exception/MWExceptionHandler.php(195): MWExceptionHandler::report()
#23 /home/fedoramd/public_html/mediawiki/includes/exception/MWExceptionHandler.php(167): MWExceptionHandler::handleException()
#24 [internal function]: MWExceptionHandler::handleUncaughtException()
#25 {main}