Permission Denied with Flatpak (/sys/block)

Development
3 
[workstation user ~]% flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
error: Flatpak system operation ConfigureRemote not allowed for user
zsh: exit 1     flatpak remote-add --if-not-exists flathub

Current flatpak running from whonix-ws qubes.