Erro ao instalar o ConfigServer

Saudações!

Estou instalando o Mautic aqui usando o esquema do curso. Cheguei na parte de bloqueio por ip usando o ConfigServer. Executei os comandos da aula e tive essa saida estranha aqui:

Note: The port details above are for information only, csf hasn’t been auto-configured.

Don't forget to:
1. Configure the following options in the csf configuration to suite your server: TCP_*, UDP_*
2. Restart csf and lfd
3. Set TESTING to 0 once you're happy with the firewall, lfd will not run until you do so

Adding current SSH session IP address to the csf whitelist in csf.allow:
Adding 189.79.182.211 to csf.allow only while in TESTING mode (not iptables ACCEPT)
*WARNING* TESTING mode is enabled - do not forget to disable it in the configuration
'lfd.service' -> '/usr/lib/systemd/system/lfd.service'
'csf.service' -> '/usr/lib/systemd/system/csf.service'
chcon: invalid context: ‘system_u:object_r:systemd_unit_file_t:s0’: No such file or directory
chcon: invalid context: ‘system_u:object_r:systemd_unit_file_t:s0’: No such file or directory
Created symlink /etc/systemd/system/multi-user.target.wants/csf.service → /lib/systemd/system/csf.service.
Created symlink /etc/systemd/system/multi-user.target.wants/lfd.service → /lib/systemd/system/lfd.service.
Failed to disable unit: Unit file firewalld.service does not exist.
Failed to stop firewalld.service: Unit firewalld.service not loaded.
Unit firewalld.service does not exist, proceeding anyway.
Created symlink /etc/systemd/system/firewalld.service → /dev/null.
'/etc/csf/csfwebmin.tgz' -> '/usr/local/csf/csfwebmin.tgz'

Installation Completed

Esse “erro” é normal ou tem mais algum passo a ser feito pra corrigir isso?

Agradecido!

Erro nunca é normal.
Mas esse tipo de aviso em instalações geralmente não interferem no funcionamento.
Continua com as aulas. Acredito que tudo vai funcionar corretamente.