Hello,
> Marking this bug as important as the package is mostly unusable by a
non-technical user.
> The motion.service can only start if the user manually creates
/var/log/motion folder.
>
> Patch attached to fix this. The suggested change was already part of the
> motion init script but was dropped when updating it to systemd service.
> The old code can be seen at:
https://sources.debian.org/src/motion/4.1.1-1.1/debian/motion.init/#L60
>
Sorry, I must have missed this, the fixed package will be uploaded to
unstable, thanks for the patch!
/Nicolas