On Debian9 curl installed (NUCboxI5)
sudo ncp-update
Downloading updates
Performing updates
Running nc-autoupdate-nc
automatic Nextcloud updates enabled
Installing nc-backup
Ign:1 http://ftp.nl.debian.org/debian stretch InRelease
Hit:2 http://security.debian.org/debian-security stretch/updates InRelease
Hit:3 http://ftp.nl.debian.org/debian stretch-updates InRelease
Hit:4 http://ftp.nl.debian.org/debian stretch Release
Hit:5 https://packages.sury.org/php stretch InRelease
Reading package lists... Done
Reading package lists... Done
Building dependency tree
Reading state information... Done
pigz is already the newest version (2.3.4-1).
0 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.
Installing nc-restore
chmod: cannot access '/etc/cron.hourly/*': No such file or directory