argonaut-debconf-crawler: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/sbin/argonaut-debconf-crawler - from package: argonaut-fai-mirror

You may install the required package with command apt-get install {package}

Error in other languages:
argonaut-debconf-crawler: bevel nie gevind nie
argonaut-debconf-crawler: comandă negăsită
argonaut-debconf-crawler: comando não encontrado
argonaut-debconf-crawler: commande introuvable
argonaut-debconf-crawler: command not found
argonaut-debconf-crawler: käsku ei ole
argonaut-debconf-crawler: không tìm thấy lệnh
argonaut-debconf-crawler: komanda nerasta
argonaut-debconf-crawler: Kommando nicht gefunden.
argonaut-debconf-crawler: kommandot finns inte
argonaut-debconf-crawler: komut yok
argonaut-debconf-crawler: nie znaleziono polecenia
argonaut-debconf-crawler: níor aimsíodh an t-ordú
argonaut-debconf-crawler: no se encontró la orden
argonaut-debconf-crawler: no s'ha trobat l'ordre
argonaut-debconf-crawler: opdracht niet gevonden
argonaut-debconf-crawler: parancs nem található
argonaut-debconf-crawler: perintah tidak ditemukan
argonaut-debconf-crawler: príkaz nenájdený
argonaut-debconf-crawler: příkaz nenalezen
argonaut-debconf-crawler: команда не найдена
argonaut-debconf-crawler: командата не е открита
argonaut-debconf-crawler: 命令找不到
argonaut-debconf-crawler: コマンドが見つかりません