Fatal error: Uncaught Error: Class "OCP\AppFramework\Db\QBMapper" not found in /home/tremblinlu/MyNextCloud/nextcloud/lib/private/Authentication/Token/DefaultTokenMapper.php:38 Stack trace: #0 {main} thrown in /home/tremblinlu/MyNextCloud/nextcloud/lib/private/Authentication/Token/DefaultTokenMapper.php on line 38