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(Cannot access the database: Too many connections (localhost))
Backtrace:
#0 D:\wikis\wiki\includes\libs\rdbms\loadbalancer\LoadBalancer.php(897): Database->reportConnectionError('Unknown error (...')
#1 D:\wikis\wiki\includes\libs\rdbms\loadbalancer\LoadBalancer.php(572): LoadBalancer->reportConnectionError()
#2 D:\wikis\wiki\includes\GlobalFunctions.php(3075): LoadBalancer->getConnection(-1, Array, false)
#3 D:\wikis\wiki\includes\cache\MessageCache.php(444): wfGetDB(-1)
#4 D:\wikis\wiki\includes\cache\MessageCache.php(403): MessageCache->loadFromDB('zh-cn', NULL)
#5 D:\wikis\wiki\includes\cache\MessageCache.php(325): MessageCache->loadFromDBWithLock('zh-cn', Array, NULL)
#6 D:\wikis\wiki\includes\cache\MessageCache.php(927): MessageCache->load('zh-cn')
#7 D:\wikis\wiki\includes\cache\MessageCache.php(858): MessageCache->getMsgFromNamespace('Gadgets-definit...', 'zh-cn')
#8 D:\wikis\wiki\includes\cache\MessageCache.php(826): MessageCache->getMessageForLang(Object(LanguageZh_hans), 'gadgets-definit...', true, Array)
#9 D:\wikis\wiki\includes\cache\MessageCache.php(767): MessageCache->getMessageFromFallbackChain(Object(LanguageZh_hans), 'gadgets-definit...', true)
#10 D:\wikis\wiki\includes\Message.php(1188): MessageCache->get('gadgets-definit...', true, Object(LanguageZh_hans))
#11 D:\wikis\wiki\includes\Message.php(950): Message->fetchMessage()
#12 D:\wikis\wiki\extensions\Gadgets\includes\MediaWikiGadgetsDefinitionRepo.php(113): Message->exists()
#13 D:\wikis\wiki\extensions\Gadgets\includes\MediaWikiGadgetsDefinitionRepo.php(83): MediaWikiGadgetsDefinitionRepo->fetchStructuredList()
#14 [internal function]: MediaWikiGadgetsDefinitionRepo->{closure}(false, 86400, Array, NULL)
#15 D:\wikis\wiki\includes\libs\objectcache\WANObjectCache.php(1004): call_user_func_array(Object(Closure), Array)
#16 D:\wikis\wiki\includes\libs\objectcache\WANObjectCache.php(906): WANObjectCache->doGetWithSetCallback('xlwiki-xl_:gadg...', 86400, Object(Closure), Array)
#17 D:\wikis\wiki\extensions\Gadgets\includes\MediaWikiGadgetsDefinitionRepo.php(91): WANObjectCache->getWithSetCallback('xlwiki-xl_:gadg...', 86400, Object(Closure), Array)
#18 D:\wikis\wiki\extensions\Gadgets\includes\MediaWikiGadgetsDefinitionRepo.php(23): MediaWikiGadgetsDefinitionRepo->loadGadgets()
#19 D:\wikis\wiki\extensions\Gadgets\includes\GadgetRepo.php(36): MediaWikiGadgetsDefinitionRepo->getGadgetIds()
#20 D:\wikis\wiki\extensions\Gadgets\GadgetHooks.php(52): GadgetRepo->getStructuredList()
#21 [internal function]: GadgetHooks::userGetDefaultOptions(Array)
#22 D:\wikis\wiki\includes\Hooks.php(195): call_user_func_array('GadgetHooks::us...', Array)
#23 D:\wikis\wiki\includes\user\User.php(1552): Hooks::run('UserGetDefaultO...', Array)
#24 D:\wikis\wiki\includes\user\User.php(5131): User::getDefaultOptions()
#25 D:\wikis\wiki\includes\user\User.php(2768): User->loadOptions()
#26 D:\wikis\wiki\includes\context\RequestContext.php(423): User->getOption('skin')
#27 D:\wikis\wiki\includes\context\ContextSource.php(153): RequestContext->getSkin()
#28 D:\wikis\wiki\extensions\MobileFrontend\includes\MobileFrontend.hooks.php(587): ContextSource->getSkin()
#29 [internal function]: MobileFrontendHooks::onSpecialPageBeforeExecute(Object(SpecialWhatLinksHere), '\xE6\xA8\xA1\xE6\x9D\xBF:\xE7\xBC\xBA\xE4\xB9\x8F\xE4\xBF...')
#30 D:\wikis\wiki\includes\Hooks.php(195): call_user_func_array('MobileFrontendH...', Array)
#31 D:\wikis\wiki\includes\specialpage\SpecialPage.php(515): Hooks::run('SpecialPageBefo...', Array)
#32 D:\wikis\wiki\includes\specialpage\SpecialPageFactory.php(576): SpecialPage->run('\xE6\xA8\xA1\xE6\x9D\xBF:\xE7\xBC\xBA\xE4\xB9\x8F\xE4\xBF...')
#33 D:\wikis\wiki\includes\MediaWiki.php(283): SpecialPageFactory::executePath(Object(Title), Object(RequestContext))
#34 D:\wikis\wiki\includes\MediaWiki.php(851): MediaWiki->performRequest()
#35 D:\wikis\wiki\includes\MediaWiki.php(512): MediaWiki->main()
#36 D:\wikis\wiki\index.php(43): MediaWiki->run()
#37 {main}