fetchfile: 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/bin/fetchfile - from package: sendfile

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

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