The installation does not progress on a clean Debian 11 machine:
It is stuck here (last lines):
Synchronizing state of proftpd.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable proftpd
Created symlink /etc/systemd/system/multi-user.target.wants/proftpd.service → /lib/systemd/system/proftpd.service.
mysql.user table already exists!
Run mysql_upgrade, not mysql_install_db
update-rc.d: error: unable to read /etc/init.d/mysql
2021-10-14 11:35:22 URL:http://c.myvestacp.com/debian/11/pma/pma.sh [6790/6790] -> "/root/phpmyadmin/pma.sh" [1]
2021-10-14 11:35:22 URL:http://c.myvestacp.com/debian/11/pma/create_tables.sql [11911/11911] -> "/root/phpmyadmin/create_tables.sql" [1]