I’m not sure what happened, it failed on owncloud installation
Updating system packages...
Installing system packages...
Initializing system random number generator...
Firewall is active and enabled on system startup
Synchronizing state of fail2ban.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable fail2ban
Installing nsd (DNS server)...
Installing Postfix (SMTP server)...
Installing Dovecot (IMAP server)...
Installing OpenDKIM/OpenDMARC...
Installing SpamAssassin...
Installing Nginx (web server)...
Installing Roundcube (webmail)...
Installing Nextcloud (contacts/calendar)...
E: Unable to locate package owncloud
E: Unable to locate package owncloud-backup
E: Unable to locate package owncloud-complete-latest.tar.bz2
E: Couldn't find any package by glob 'owncloud-complete-latest.tar.bz2'
E: Couldn't find any package by regex 'owncloud-complete-latest.tar.bz2'