ooxml2pdf: 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/ooxml2pdf - from package: unoconv

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

Error in other languages:
ooxml2pdf: bevel nie gevind nie
ooxml2pdf: comandă negăsită
ooxml2pdf: comando não encontrado
ooxml2pdf: commande introuvable
ooxml2pdf: command not found
ooxml2pdf: käsku ei ole
ooxml2pdf: không tìm thấy lệnh
ooxml2pdf: komanda nerasta
ooxml2pdf: Kommando nicht gefunden.
ooxml2pdf: kommandot finns inte
ooxml2pdf: komut yok
ooxml2pdf: nie znaleziono polecenia
ooxml2pdf: níor aimsíodh an t-ordú
ooxml2pdf: no se encontró la orden
ooxml2pdf: no s'ha trobat l'ordre
ooxml2pdf: opdracht niet gevonden
ooxml2pdf: parancs nem található
ooxml2pdf: perintah tidak ditemukan
ooxml2pdf: príkaz nenájdený
ooxml2pdf: příkaz nenalezen
ooxml2pdf: команда не найдена
ooxml2pdf: командата не е открита
ooxml2pdf: 命令找不到
ooxml2pdf: コマンドが見つかりません