DB Driver not found exception

[sanglyb]

Hello.
I had an exception when executed the command:
sudo -u www-data php /var/www/nextcloud/occ preview:generate-all -vvv
Could you please advice me where the problem could be? NextCloud itself works normally, no strange errors in the logs were found.

Doctrine\DBAL\Exception: Failed to connect to the database: An exception occurred in the driver: could not find driver in /var/www/nextcloud/lib/private/DB/Connection.php:139
Stack trace:
#0 /var/www/nextcloud/3rdparty/doctrine/dbal/src/Connection.php(1519): OC\DB\Connection->connect()
#1 /var/www/nextcloud/3rdparty/doctrine/dbal/src/Connection.php(1041): Doctrine\DBAL\Connection->getWrappedConnection()
#2 /var/www/nextcloud/lib/private/DB/Connection.php(261): Doctrine\DBAL\Connection->executeQuery()
#3 /var/www/nextcloud/3rdparty/doctrine/dbal/src/Query/QueryBuilder.php(345): OC\DB\Connection->executeQuery()
#4 /var/www/nextcloud/lib/private/DB/QueryBuilder/QueryBuilder.php(281): Doctrine\DBAL\Query\QueryBuilder->execute()
#5 /var/www/nextcloud/lib/private/AppConfig.php(411): OC\DB\QueryBuilder\QueryBuilder->execute()
#6 /var/www/nextcloud/lib/private/AppConfig.php(176): OC\AppConfig->loadConfigValues()
#7 /var/www/nextcloud/lib/private/AppConfig.php(367): OC\AppConfig->getApps()
#8 /var/www/nextcloud/lib/private/legacy/OC_App.php(983): OC\AppConfig->getValues()
#9 /var/www/nextcloud/lib/private/Server.php(713): OC_App::getAppVersions()
#10 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(162): OC\Server->OC{closure}()
#11 /var/www/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php(122): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility{closure}()
#12 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(129): Pimple\Container->offsetGet()
#13 /var/www/nextcloud/lib/private/ServerContainer.php(136): OC\AppFramework\Utility\SimpleContainer->query()
#14 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(57): OC\ServerContainer->query()
#15 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(184): OC\AppFramework\Utility\SimpleContainer->get()
#16 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(162): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility{closure}()
#17 /var/www/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility{closure}()
#18 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(129): Pimple\Container->offsetGet()
#19 /var/www/nextcloud/lib/private/ServerContainer.php(136): OC\AppFramework\Utility\SimpleContainer->query()
#20 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(57): OC\ServerContainer->query()
#21 /var/www/nextcloud/lib/private/Server.php(1105): OC\AppFramework\Utility\SimpleContainer->get()
#22 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(162): OC\Server->OC{closure}()
#23 /var/www/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php(122): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility{closure}()
#24 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(129): Pimple\Container->offsetGet()
#25 /var/www/nextcloud/lib/private/ServerContainer.php(136): OC\AppFramework\Utility\SimpleContainer->query()
#26 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(57): OC\ServerContainer->query()
#27 /var/www/nextcloud/lib/private/Server.php(2082): OC\AppFramework\Utility\SimpleContainer->get()
#28 /var/www/nextcloud/lib/private/Files/View.php(122): OC\Server->getLockingProvider()
#29 /var/www/nextcloud/lib/private/Server.php(454): OC\Files\View->__construct()
#30 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(162): OC\Server->OC{closure}()
#31 /var/www/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php(122): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility{closure}()
#32 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(129): Pimple\Container->offsetGet()
#33 /var/www/nextcloud/lib/private/ServerContainer.php(136): OC\AppFramework\Utility\SimpleContainer->query()
#34 /var/www/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php(57): OC\ServerContainer->query()
#35 /var/www/nextcloud/lib/private/Server.php(1445): OC\AppFramework\Utility\SimpleContainer->get()
#36 /var/www/nextcloud/lib/base.php(602): OC\Server->boot()
#37 /var/www/nextcloud/lib/base.php(1104): OC::init()
#38 /var/www/nextcloud/console.php(48): require_once('...')
#39 /var/www/nextcloud/occ(11): require_once('...')

[st3iny]

You have to properly configure the DB driver for the cli version of PHP. You probably only configured it for your web server.

Ubuntu: /etc/php/8.1/cli/php.ini

[joshtrichards]

Hi @sanglyb Thanks for your report, however, this is not a bug in previewgenerator. It's a configuration matter. If you're still having this problem, please post the details of your NC configuration over at the Nextcloud Help Forum to receive feedback and assistance.