fop-ttfreader: 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/fop-ttfreader - from package: fop

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

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