Try waiting a few minutes and reloading.
(Cannot access the database)
Backtrace:
#0 /wikidelia.net/www/includes/libs/rdbms/loadbalancer/LoadBalancer.php(769): Wikimedia\Rdbms\LoadBalancer->reportConnectionError() #1 /wikidelia.net/www/includes/GlobalFunctions.php(2694): Wikimedia\Rdbms\LoadBalancer->getConnection() #2 /wikidelia.net/www/includes/specials/SpecialRecentchanges.php(343): wfGetDB() #3 /wikidelia.net/www/includes/specials/SpecialRecentchanges.php(667): SpecialRecentChanges->getDB() #4 /wikidelia.net/www/includes/specials/SpecialRecentchanges.php(158): SpecialRecentChanges->checkLastModified() #5 /wikidelia.net/www/includes/specialpage/SpecialPage.php(569): SpecialRecentChanges->execute() #6 /wikidelia.net/www/includes/specialpage/SpecialPageFactory.php(568): SpecialPage->run() #7 /wikidelia.net/www/includes/MediaWiki.php(288): MediaWiki\Special\SpecialPageFactory->executePath() #8 /wikidelia.net/www/includes/MediaWiki.php(860): MediaWiki->performRequest() #9 /wikidelia.net/www/includes/MediaWiki.php(517): MediaWiki->main() #10 /wikidelia.net/www/index.php(42): MediaWiki->run() #11 {main}