Can't load images from a ZFS dataset, not visible in the import dialog

Nextcloud version (eg, 20.0.5): 24.0.1
Operating system and version (eg, Ubuntu 20.04): Kubuntu 20.04

I have a zfs datapool and respective dataset, from where I am trying to add files to my NC application on my normal root disk.

I have tried to ensure that the zfs datapool and the files I am trying to add have proper ownership and read rights, However, when I open the Add-dialog, this ZFS drive is not visible at all.

Is there something, that should be set when mounting this drive, or something else, that I am missing here?

BR Veli-Matti