Hi Everyone,

This caught my eye when running one of my maintenance scripts. The Setup.php:563 warning is new.

The warning was not present on the old CentOS machine. The new machine is Ubuntu 20, PHP 7.4, MySQL 8, Mediawiki 1.35.1.

# php /var/www/html/w/maintenance/generateSitemap.php ...

PHP Notice: Trying to access array offset on value of type bool in /var/www/html/w/includes/Setup.php on line 563 Wikimedia\Rdbms\DBConnectionError from line 1420 of /var/www/html/w/includes/libs/rdbms/loadbalancer/LoadBalancer.php: Cannot access the database: Unknown error (localhost) #0 /var/www/html/w/includes/libs/rdbms/loadbalancer/LoadBalancer.php(934): Wikimedia\Rdbms\LoadBalancer->reportConnectionError() #1 /var/www/html/w/includes/libs/rdbms/loadbalancer/LoadBalancer.php(901): Wikimedia\Rdbms\LoadBalancer->getServerConnection() #2 /var/www/html/w/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1046): Wikimedia\Rdbms\LoadBalancer->getConnection() #3 /var/www/html/w/maintenance/includes/Maintenance.php(1371): Wikimedia\Rdbms\LoadBalancer->getMaintenanceConnectionRef() #4 /var/www/html/w/maintenance/generateSitemap.php(200): Maintenance->getDB() #5 /var/www/html/w/maintenance/doMaintenance.php(107): GenerateSitemap->execute() #6 /var/www/html/w/maintenance/generateSitemap.php(564): require_once('/var/www/html/w...') #7 {main}

I think the exception is expected and due to some troubles with our system users.

Jeff