Drobo 5N, cannot run sudo in terminal

What could be the problem and what could be a solution? I think it has to do with file permissions.

Drobo5N:~ $ sudo ls

sudo: /mnt/DroboFS/System/sudoers.d is owned by uid 1000, should be 0


erikssone is not in the sudoers file. This incident will be reported.

Drobo5N:~ $