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(Cannot access the database)
Backtrace:
#0 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\libs\rdbms\loadbalancer\LoadBalancer.php(897): Database->reportConnectionError('Unknown error (...')
#1 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\libs\rdbms\loadbalancer\LoadBalancer.php(572): LoadBalancer->reportConnectionError()
#2 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\GlobalFunctions.php(3075): LoadBalancer->getConnection(-1, Array, false)
#3 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\cache\MessageCache.php(444): wfGetDB(-1)
#4 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\cache\MessageCache.php(403): MessageCache->loadFromDB('en', NULL)
#5 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\cache\MessageCache.php(325): MessageCache->loadFromDBWithLock('en', Array, NULL)
#6 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\cache\MessageCache.php(927): MessageCache->load('en')
#7 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\cache\MessageCache.php(858): MessageCache->getMsgFromNamespace('Mainpage', 'en')
#8 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\cache\MessageCache.php(826): MessageCache->getMessageForLang(Object(Language), 'mainpage', true, Array)
#9 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\cache\MessageCache.php(767): MessageCache->getMessageFromFallbackChain(Object(Language), 'mainpage', true)
#10 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\Message.php(1188): MessageCache->get('mainpage', true, Object(Language))
#11 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\Message.php(802): Message->fetchMessage()
#12 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\Message.php(902): Message->toString()
#13 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\Title.php(557): Message->text()
#14 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\MediaWiki.php(116): Title::newMainPage()
#15 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\MediaWiki.php(136): MediaWiki->parseTitle()
#16 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\MediaWiki.php(766): MediaWiki->getTitle()
#17 E:\xampp-1.8.3.4\htdocs\mediawiki\includes\MediaWiki.php(512): MediaWiki->main()
#18 E:\xampp-1.8.3.4\htdocs\mediawiki\index.php(43): MediaWiki->run()
#19 {main}