Connecting to DB wikiaoo at 172.20.0.2 with user wikiaoouser
Warning: session_name(): Session name cannot be changed after headers have already been sent in /var/www/html/includes/Setup.php on line 501

Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/LocalSettings.php:323) in /var/www/html/includes/Request/WebResponse.php on line 78
MediaWiki internal error.

Original exception: [a0c27e2bf314a1f7b96176e8] / Wikimedia\Rdbms\DBConnectionError: Cannot access the database: Connection refused (172.20.0.2)
Backtrace:
from /var/www/html/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1134)
#0 /var/www/html/includes/libs/rdbms/loadbalancer/LoadBalancer.php(803): Wikimedia\Rdbms\LoadBalancer->reportConnectionError()
#1 /var/www/html/includes/libs/rdbms/loadbalancer/LoadBalancer.php(791): Wikimedia\Rdbms\LoadBalancer->getServerConnection(int, string, int)
#2 /var/www/html/includes/libs/rdbms/database/DBConnRef.php(107): Wikimedia\Rdbms\LoadBalancer->getConnectionInternal(int, array, string, int)
#3 /var/www/html/includes/libs/rdbms/database/DBConnRef.php(125): Wikimedia\Rdbms\DBConnRef->ensureConnection()
#4 /var/www/html/includes/libs/rdbms/database/DBConnRef.php(338): Wikimedia\Rdbms\DBConnRef->__call(string, array)
#5 /var/www/html/includes/libs/rdbms/querybuilder/SelectQueryBuilder.php(779): Wikimedia\Rdbms\DBConnRef->selectField(array, string, array, string, array, array)
#6 /var/www/html/includes/language/LCStoreDB.php(65): Wikimedia\Rdbms\SelectQueryBuilder->fetchField()
#7 /var/www/html/includes/language/LocalisationCache.php(567): LCStoreDB->get(string, string)
#8 /var/www/html/includes/language/LocalisationCache.php(613): LocalisationCache->isExpired(string)
#9 /var/www/html/includes/language/LocalisationCache.php(524): LocalisationCache->initLanguage(string)
#10 /var/www/html/includes/language/LocalisationCache.php(404): LocalisationCache->loadSubitem(string, string, string)
#11 /var/www/html/includes/language/LocalisationCache.php(420): LocalisationCache->getSubitem(string, string, string)
#12 /var/www/html/includes/language/MessageCache.php(1206): LocalisationCache->getSubitemWithSource(string, string, string)
#13 /var/www/html/includes/language/MessageCache.php(1146): MessageCache->getMessageForLang(string, string, bool, array, MediaWiki\Language\MessageInfo)
#14 /var/www/html/includes/language/MessageCache.php(1041): MessageCache->getMessageFromFallbackChain(string, string, bool, MediaWiki\Language\MessageInfo)
#15 /var/www/html/includes/language/Message/Message.php(1545): MessageCache->get(string, bool, string, MediaWiki\Language\MessageInfo)
#16 /var/www/html/includes/language/Message/Message.php(1059): MediaWiki\Message\Message->fetchMessage()
#17 /var/www/html/includes/language/Message/Message.php(1151): MediaWiki\Message\Message->format(string)
#18 /var/www/html/includes/title/MalformedTitleException.php(61): MediaWiki\Message\Message->text()
#19 /var/www/html/includes/title/TitleParser.php(85): MediaWiki\Title\MalformedTitleException->__construct(string, string, array)
#20 /var/www/html/includes/title/TitleParser.php(231): MediaWiki\Title\TitleParser::MediaWiki\Title\{closure}(string, string)
#21 /var/www/html/includes/title/Title.php(2748): MediaWiki\Title\TitleParser->splitTitleString(string, int)
#22 /var/www/html/includes/title/Title.php(507): MediaWiki\Title\Title->secureAndSplit(string)
#23 /var/www/html/includes/actions/ActionEntryPoint.php(238): MediaWiki\Title\Title::newFromURL(string)
#24 /var/www/html/includes/actions/ActionEntryPoint.php(327): MediaWiki\Actions\ActionEntryPoint->parseTitle(MediaWiki\Request\WebRequest)
#25 /var/www/html/includes/actions/ActionEntryPoint.php(91): MediaWiki\Actions\ActionEntryPoint->getTitle()
#26 /var/www/html/includes/MediaWikiEntryPoint.php(202): MediaWiki\Actions\ActionEntryPoint->execute()
#27 /var/www/html/index.php(58): MediaWiki\MediaWikiEntryPoint->run()
#28 {main}

Exception caught inside exception handler: [a0c27e2bf314a1f7b96176e8] / Wikimedia\Rdbms\DBConnectionError: Cannot access the database: Connection refused (172.20.0.2)
Backtrace:
from /var/www/html/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1134)
#0 /var/www/html/includes/libs/rdbms/loadbalancer/LoadBalancer.php(803): Wikimedia\Rdbms\LoadBalancer->reportConnectionError()
#1 /var/www/html/includes/libs/rdbms/loadbalancer/LoadBalancer.php(791): Wikimedia\Rdbms\LoadBalancer->getServerConnection(int, string, int)
#2 /var/www/html/includes/libs/rdbms/database/DBConnRef.php(107): Wikimedia\Rdbms\LoadBalancer->getConnectionInternal(int, array, string, int)
#3 /var/www/html/includes/libs/rdbms/database/DBConnRef.php(125): Wikimedia\Rdbms\DBConnRef->ensureConnection()
#4 /var/www/html/includes/libs/rdbms/database/DBConnRef.php(703): Wikimedia\Rdbms\DBConnRef->__call(string, array)
#5 /var/www/html/includes/libs/rdbms/database/Database.php(2695): Wikimedia\Rdbms\DBConnRef->getSessionLagStatus()
#6 /var/www/html/extensions/Gadgets/includes/MediaWikiGadgetsDefinitionRepo.php(144): Wikimedia\Rdbms\Database::getCacheSetOptions(Wikimedia\Rdbms\DBConnRef)
#7 /var/www/html/includes/libs/objectcache/WANObjectCache.php(1845): MediaWiki\Extension\Gadgets\MediaWikiGadgetsDefinitionRepo->MediaWiki\Extension\Gadgets\{closure}(bool, int, array, null, array)
#8 /var/www/html/includes/libs/objectcache/WANObjectCache.php(1650): Wikimedia\ObjectCache\WANObjectCache->fetchOrRegenerate(string, int, Closure, array, array)
#9 /var/www/html/extensions/Gadgets/includes/MediaWikiGadgetsDefinitionRepo.php(138): Wikimedia\ObjectCache\WANObjectCache->getWithSetCallback(string, int, Closure, array)
#10 /var/www/html/includes/libs/objectcache/BagOStuff.php(266): MediaWiki\Extension\Gadgets\MediaWikiGadgetsDefinitionRepo->MediaWiki\Extension\Gadgets\{closure}(int)
#11 /var/www/html/extensions/Gadgets/includes/MediaWikiGadgetsDefinitionRepo.php(133): Wikimedia\ObjectCache\BagOStuff->getWithSetCallback(string, int, Closure)
#12 /var/www/html/extensions/Gadgets/includes/MediaWikiGadgetsDefinitionRepo.php(76): MediaWiki\Extension\Gadgets\MediaWikiGadgetsDefinitionRepo->loadGadgets()
#13 /var/www/html/extensions/Gadgets/includes/GadgetRepo.php(70): MediaWiki\Extension\Gadgets\MediaWikiGadgetsDefinitionRepo->getGadgetIds()
#14 /var/www/html/extensions/Gadgets/includes/Hooks.php(85): MediaWiki\Extension\Gadgets\GadgetRepo->getStructuredList()
#15 /var/www/html/includes/HookContainer/HookContainer.php(155): MediaWiki\Extension\Gadgets\Hooks->onUserGetDefaultOptions(array)
#16 /var/www/html/includes/HookContainer/HookRunner.php(4312): MediaWiki\HookContainer\HookContainer->run(string, array)
#17 /var/www/html/includes/user/Options/DefaultOptionsLookup.php(127): MediaWiki\HookContainer\HookRunner->onUserGetDefaultOptions(array)
#18 /var/www/html/includes/user/Options/DefaultOptionsLookup.php(136): MediaWiki\User\Options\DefaultOptionsLookup->getGenericDefaultOptions()
#19 /var/www/html/includes/user/Options/UserOptionsManager.php(550): MediaWiki\User\Options\DefaultOptionsLookup->getDefaultOptions(MediaWiki\User\User)
#20 /var/www/html/includes/user/Options/UserOptionsManager.php(452): MediaWiki\User\Options\UserOptionsManager->loadOriginalOptions(MediaWiki\User\User, int)
#21 /var/www/html/includes/user/Options/UserOptionsManager.php(177): MediaWiki\User\Options\UserOptionsManager->loadUserOptions(MediaWiki\User\User, int)
#22 /var/www/html/includes/context/RequestContext.php(471): MediaWiki\User\Options\UserOptionsManager->getOption(MediaWiki\User\User, string)
#23 /var/www/html/includes/language/Message/Message.php(461): MediaWiki\Context\RequestContext->getLanguage()
#24 /var/www/html/includes/language/Message/Message.php(1543): MediaWiki\Message\Message->getLanguageCode()
#25 /var/www/html/includes/language/Message/Message.php(1059): MediaWiki\Message\Message->fetchMessage()
#26 /var/www/html/includes/language/Message/Message.php(1151): MediaWiki\Message\Message->format(string)
#27 /var/www/html/includes/exception/MWExceptionRenderer.php(262): MediaWiki\Message\Message->text()
#28 /var/www/html/includes/exception/MWExceptionRenderer.php(407): MediaWiki\Exception\MWExceptionRenderer::msg(string, string)
#29 /var/www/html/includes/exception/MWExceptionRenderer.php(114): MediaWiki\Exception\MWExceptionRenderer::reportOutageHTML(Wikimedia\Rdbms\DBConnectionError)
#30 /var/www/html/includes/exception/MWExceptionHandler.php(137): MediaWiki\Exception\MWExceptionRenderer::output(Wikimedia\Rdbms\DBConnectionError, int)
#31 /var/www/html/includes/exception/MWExceptionHandler.php(241): MediaWiki\Exception\MWExceptionHandler::report(Wikimedia\Rdbms\DBConnectionError)
#32 /var/www/html/includes/MediaWikiEntryPoint.php(222): MediaWiki\Exception\MWExceptionHandler::handleException(Wikimedia\Rdbms\DBConnectionError, string)
#33 /var/www/html/includes/actions/ActionEntryPoint.php(79): MediaWiki\MediaWikiEntryPoint->handleTopLevelError(Wikimedia\Rdbms\DBConnectionError)
#34 /var/www/html/includes/MediaWikiEntryPoint.php(208): MediaWiki\Actions\ActionEntryPoint->handleTopLevelError(Wikimedia\Rdbms\DBConnectionError)
#35 /var/www/html/index.php(58): MediaWiki\MediaWikiEntryPoint->run()
#36 {main}