Fatal error: Uncaught Error: Class "OCP\AppFramework\Db\QBMapper" not found in /home/ally/mittondev/temp/nextcloud/lib/private/Metadata/FileMetadataMapper.php:36 Stack trace: #0 {main} thrown in /home/ally/mittondev/temp/nextcloud/lib/private/Metadata/FileMetadataMapper.php on line 36