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(Cannot access the database)
Backtrace:
#0 /var/www/projectmailer/includes/libs/rdbms/loadbalancer/LoadBalancer.php(972): Wikimedia\Rdbms\LoadBalancer->reportConnectionError() #1 /var/www/projectmailer/includes/libs/rdbms/loadbalancer/LoadBalancer.php(944): Wikimedia\Rdbms\LoadBalancer->getServerConnection() #2 /var/www/projectmailer/includes/libs/rdbms/database/DBConnRef.php(95): Wikimedia\Rdbms\LoadBalancer->getConnectionInternal() #3 /var/www/projectmailer/includes/libs/rdbms/database/DBConnRef.php(101): Wikimedia\Rdbms\DBConnRef->ensureConnection() #4 /var/www/projectmailer/includes/libs/rdbms/database/DBConnRef.php(515): Wikimedia\Rdbms\DBConnRef->__call() #5 /var/www/projectmailer/includes/block/DatabaseBlock.php(394): Wikimedia\Rdbms\DBConnRef->anyString() #6 /var/www/projectmailer/includes/block/DatabaseBlock.php(268): MediaWiki\Block\DatabaseBlock::getRangeCond() #7 /var/www/projectmailer/includes/block/DatabaseBlock.php(890): MediaWiki\Block\DatabaseBlock::newLoad() #8 /var/www/projectmailer/includes/block/BlockManager.php(161): MediaWiki\Block\DatabaseBlock::newListFromTarget() #9 /var/www/projectmailer/includes/user/User.php(1432): MediaWiki\Block\BlockManager->getUserBlock() #10 /var/www/projectmailer/includes/user/User.php(1530): User->getBlockedStatus() #11 /var/www/projectmailer/includes/Permissions/PermissionManager.php(814): User->getBlock() #12 /var/www/projectmailer/includes/Permissions/PermissionManager.php(538): MediaWiki\Permissions\PermissionManager->checkUserBlock() #13 /var/www/projectmailer/includes/Permissions/PermissionManager.php(345): MediaWiki\Permissions\PermissionManager->getPermissionErrorsInternal() #14 /var/www/projectmailer/includes/Permissions/UserAuthority.php(259): MediaWiki\Permissions\PermissionManager->getPermissionErrors() #15 /var/www/projectmailer/includes/Permissions/UserAuthority.php(205): MediaWiki\Permissions\UserAuthority->internalCan() #16 /var/www/projectmailer/includes/user/User.php(3494): MediaWiki\Permissions\UserAuthority->authorizeRead() #17 /var/www/projectmailer/includes/MediaWiki.php(227): User->authorizeRead() #18 /var/www/projectmailer/includes/MediaWiki.php(904): MediaWiki->performRequest() #19 /var/www/projectmailer/includes/MediaWiki.php(562): MediaWiki->main() #20 /var/www/projectmailer/index.php(50): MediaWiki->run() #21 /var/www/projectmailer/index.php(46): wfIndexMain() #22 {main}