Systemctl disable service - "Operation not permitted"

Hi,

I’m using NordVPN on a container with LXC 3.0.3 and Ubuntu 18.04.
I’d like to disable NordVPN daemon with “systemctl disable nordvpnd” by root.
Searching inside logs I found into “/var/log/syslog”:

systemd[1]: nordvpnd.socket: Failed to reset devices.list: Operation not permitted
systemd[1]: nordvpnd.service: Failed to reset devices.list: Operation not permitted

Can I fix/force it?

Thank you

Those aren’t real errors, they’re just verbose log entries and can be ignored.