Found it!
After several hours of tries, it was so simple
In the commands, where it shows apache:apache must replace with www-data:www-data for Debian/Ubunto distros
I'm newbie in Linux
Installed Debian 11
Installed HAProxy 2.6
Installed Roxy-Wi (https://roxy-wi.org/installation#manual)
I dont't understand what i need to do in this step in the upper link:
"If you use Debian/Ubuntu:
Change httpd to apache2 PATH and apache to www-data user in all configs"
I...