omv4 needs a lot more fixing which is why I didn't "fix" it (it is EOL'd). I recommend just uninstalling omv-extras (or at least remove /etc/apt/source.list.d/omv-extra-org.list) if you don't want to upgrade to a supported OMV release.
Thanks a lot
let me plan to upgrade to omv5
I used zfs on it
i will remove source.lists.d/omvextraorg.list first