Fatal error: Uncaught Error: Class "OCP\Migration\BigIntMigration" not found in /var/www/html/nextcloud/apps/dav/lib/Migration/Version1004Date20170926103422.php:13 Stack trace: #0 {main} thrown in /var/www/html/nextcloud/apps/dav/lib/Migration/Version1004Date20170926103422.php on line 13