qwebcontentedit: 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/qwebcontentedit - from package: weboob-qt

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

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