Fatal error: Uncaught Error: Class "OC\DB\Migrator" not found in /home/tremblinlu/MyNextCloud/nextcloud/lib/private/DB/OracleMigrator.php:41 Stack trace: #0 {main} thrown in /home/tremblinlu/MyNextCloud/nextcloud/lib/private/DB/OracleMigrator.php on line 41