Ubuntu 16.04 + Bitnami WP AWS + Ошибка установки Webmin + E: Пакет [] не имеет кандидата на установку

У меня также есть открытая ветка на форуме поддержки Bitnami . Я установил WordPress Multisite Certified by Bitnami через торговую площадку AWS.

Я пытаюсь установить webmin (или какой-то другой пакет, правда) и не могу

Через SSH я запускаю:

sudo apt-get update

sudo apt-get install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl apt-show-versions python

Какие результаты:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package libnet-ssleay-perl is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Package libauthen-pam-perl is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Package libio-pty-perl is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Package apt-show-versions is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Package python is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'libnet-ssleay-perl' has no installation candidate
E: Package 'libauthen-pam-perl' has no installation candidate
E: Package 'libio-pty-perl' has no installation candidate
E: Package 'apt-show-versions' has no installation candidate
E: Package 'python' has no installation candidate

Я пробовал кучу исправлений и кажется есть кое-что, что нужно настроить в /etc/apt/sources.list ... странно то, что этот файл пуст.

Я также пробовал

nano /etc/apt/sources.list

deb http://download.webmin.com/download/repository sarge contrib

... затем ..

sudo apt-get -f install webmin

... который выводит

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 webmin : Depends: libnet-ssleay-perl but it is not installable
          Depends: libauthen-pam-perl but it is not installable
          Depends: libio-pty-perl but it is not installable
          Depends: apt-show-versions but it is not installable
          Depends: python but it is not installable
E: Unable to correct problems, you have held broken packages.

Заранее спасибо!