Try waiting a few minutes and reloading.
(Cannot access the database)
Backtrace:
#0 /home/simsong/simson.net/wiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(991): Wikimedia\Rdbms\LoadBalancer->reportConnectionError() #1 /home/simsong/simson.net/wiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(963): Wikimedia\Rdbms\LoadBalancer->getServerConnection(0, 'simsong', 0) #2 /home/simsong/simson.net/wiki/includes/page/WikiPage.php(476): Wikimedia\Rdbms\LoadBalancer->getConnection(-1) #3 /home/simsong/simson.net/wiki/includes/page/WikiPage.php(598): WikiPage->loadPageData() #4 /home/simsong/simson.net/wiki/includes/page/WikiPage.php(672): WikiPage->exists() #5 /home/simsong/simson.net/wiki/includes/page/WikiPage.php(304): WikiPage->getContentModel() #6 /home/simsong/simson.net/wiki/includes/page/WikiPage.php(290): WikiPage->getContentHandler() #7 /home/simsong/simson.net/wiki/includes/page/Article.php(2012): WikiPage->getActionOverrides() #8 /home/simsong/simson.net/wiki/includes/actions/ActionFactory.php(255): Article->getActionOverrides() #9 /home/simsong/simson.net/wiki/includes/actions/ActionFactory.php(349): MediaWiki\Actions\ActionFactory->getAction('view', Object(Article), Object(RequestContext)) #10 /home/simsong/simson.net/wiki/includes/actions/Action.php(111): MediaWiki\Actions\ActionFactory->getActionName(Object(RequestContext)) #11 /home/simsong/simson.net/wiki/includes/MediaWiki.php(176): Action::getActionName(Object(RequestContext)) #12 /home/simsong/simson.net/wiki/includes/MediaWiki.php(892): MediaWiki->getAction() #13 /home/simsong/simson.net/wiki/includes/MediaWiki.php(564): MediaWiki->main() #14 /home/simsong/simson.net/wiki/index.php(53): MediaWiki->run() #15 /home/simsong/simson.net/wiki/index.php(46): wfIndexMain() #16 {main}