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(Cannot access the database: Too many connections (127.0.0.1))
Backtrace:
#0 /var/www/mediawiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1134): Wikimedia\Rdbms\Database->reportConnectionError('Too many connec...') #1 /var/www/mediawiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(749): Wikimedia\Rdbms\LoadBalancer->reportConnectionError() #2 /var/www/mediawiki/includes/GlobalFunctions.php(2801): Wikimedia\Rdbms\LoadBalancer->getConnection(0, Array, false) #3 /var/www/mediawiki/extensions/Gadgets/includes/MediaWikiGadgetsDefinitionRepo.php(96): wfGetDB(-1) #4 /var/www/mediawiki/includes/libs/objectcache/WANObjectCache.php(1240): MediaWikiGadgetsDefinitionRepo->{closure}(false, 86400, Array, NULL) #5 /var/www/mediawiki/includes/libs/objectcache/WANObjectCache.php(1114): WANObjectCache->doGetWithSetCallback('mediawikidb:gad...', 86400, Object(Closure), Array) #6 /var/www/mediawiki/extensions/Gadgets/includes/MediaWikiGadgetsDefinitionRepo.php(106): WANObjectCache->getWithSetCallback('mediawikidb:gad...', 86400, Object(Closure), Array) #7 /var/www/mediawiki/extensions/Gadgets/includes/MediaWikiGadgetsDefinitionRepo.php(31): MediaWikiGadgetsDefinitionRepo->loadGadgets() #8 /var/www/mediawiki/extensions/Gadgets/includes/GadgetRepo.php(71): MediaWikiGadgetsDefinitionRepo->getGadgetIds() #9 /var/www/mediawiki/extensions/Gadgets/includes/GadgetHooks.php(47): GadgetRepo->getStructuredList() #10 /var/www/mediawiki/includes/Hooks.php(177): GadgetHooks::userGetDefaultOptions(Array) #11 /var/www/mediawiki/includes/Hooks.php(205): Hooks::callHook('UserGetDefaultO...', Array, Array, NULL) #12 /var/www/mediawiki/includes/user/User.php(1751): Hooks::run('UserGetDefaultO...', Array) #13 /var/www/mediawiki/includes/user/User.php(5438): User::getDefaultOptions() #14 /var/www/mediawiki/includes/user/User.php(3095): User->loadOptions() #15 /var/www/mediawiki/includes/context/RequestContext.php(336): User->getOption('language') #16 /var/www/mediawiki/includes/Message.php(710): RequestContext->getLanguage() #17 /var/www/mediawiki/includes/context/RequestContext.php(426): Message->setContext(Object(RequestContext)) #18 /var/www/mediawiki/includes/context/ContextSource.php(171): RequestContext->msg('badtitle') #19 /var/www/mediawiki/includes/OutputPage.php(2460): ContextSource->msg('badtitle') #20 /var/www/mediawiki/includes/exception/ErrorPageError.php(68): OutputPage->showErrorPage('badtitle', 'title-invalid-c...', Array) #21 /var/www/mediawiki/includes/exception/BadRequestError.php(32): ErrorPageError->report() #22 /var/www/mediawiki/includes/MediaWiki.php(530): BadRequestError->report() #23 /var/www/mediawiki/index.php(42): MediaWiki->run() #24 {main}