Without a modified version of minio, i have the same error.
“Object down” and “cross device” log entry.
[root@filebrowser ~]# cells version
Pydio Cells Home Edition
Version: 4.2.3-dev.20230626134437
Built: 26 Jun 23 13:44 +0000
Git commit: cfc422416dc4697b87866fd0e2420cf1b3b8fef7
OS/Arch: linux/amd64
Go version: go1.19.10