htmlToXBel: 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/htmlToXBel - from package: arora

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

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