pdfatfi: command not found

Have You tried accessing the binary with the full path?

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/pdfatfi - from package: texlive-latex-base

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