utf8lookup: 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/utf8lookup - from package: uniutils

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

Error in other languages:
utf8lookup: bevel nie gevind nie
utf8lookup: comandă negăsită
utf8lookup: comando não encontrado
utf8lookup: commande introuvable
utf8lookup: command not found
utf8lookup: käsku ei ole
utf8lookup: không tìm thấy lệnh
utf8lookup: komanda nerasta
utf8lookup: Kommando nicht gefunden.
utf8lookup: kommandot finns inte
utf8lookup: komut yok
utf8lookup: nie znaleziono polecenia
utf8lookup: níor aimsíodh an t-ordú
utf8lookup: no se encontró la orden
utf8lookup: no s'ha trobat l'ordre
utf8lookup: opdracht niet gevonden
utf8lookup: parancs nem található
utf8lookup: perintah tidak ditemukan
utf8lookup: príkaz nenájdený
utf8lookup: příkaz nenalezen
utf8lookup: команда не найдена
utf8lookup: командата не е открита
utf8lookup: 命令找不到
utf8lookup: コマンドが見つかりません