hxnormalize: 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/hxnormalize - from package: html-xml-utils

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

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