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Backtrace:
#0 /var/www/wiki/mediawiki-1.36.2/includes/libs/rdbms/loadbalancer/LoadBalancer.php(995): Wikimedia\Rdbms\LoadBalancer->reportConnectionError() #1 /var/www/wiki/mediawiki-1.36.2/includes/libs/rdbms/loadbalancer/LoadBalancer.php(960): Wikimedia\Rdbms\LoadBalancer->getServerConnection() #2 /var/www/wiki/mediawiki-1.36.2/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1099): Wikimedia\Rdbms\LoadBalancer->getConnection() #3 /var/www/wiki/mediawiki-1.36.2/includes/Revision/RevisionStore.php(274): Wikimedia\Rdbms\LoadBalancer->getConnectionRef() #4 /var/www/wiki/mediawiki-1.36.2/includes/Revision/RevisionStore.php(263): MediaWiki\Revision\RevisionStore->getDBConnectionRef() #5 /var/www/wiki/mediawiki-1.36.2/includes/Revision/RevisionStore.php(2554): MediaWiki\Revision\RevisionStore->getDBConnectionRefForQueryFlags() #6 /var/www/wiki/mediawiki-1.36.2/includes/Revision/RevisionStore.php(1243): MediaWiki\Revision\RevisionStore->newRevisionFromConds() #7 /var/www/wiki/mediawiki-1.36.2/includes/MediaWiki.php(114): MediaWiki\Revision\RevisionStore->getRevisionById() #8 /var/www/wiki/mediawiki-1.36.2/includes/MediaWiki.php(156): MediaWiki->parseTitle() #9 /var/www/wiki/mediawiki-1.36.2/includes/MediaWiki.php(874): MediaWiki->getTitle() #10 /var/www/wiki/mediawiki-1.36.2/includes/MediaWiki.php(546): MediaWiki->main() #11 /var/www/wiki/mediawiki-1.36.2/index.php(53): MediaWiki->run() #12 /var/www/wiki/mediawiki-1.36.2/index.php(46): wfIndexMain() #13 {main}