wopl2ofm: 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/wopl2ofm - from package: texlive-binaries

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

Error in other languages:
wopl2ofm: bevel nie gevind nie
wopl2ofm: comandă negăsită
wopl2ofm: comando não encontrado
wopl2ofm: commande introuvable
wopl2ofm: command not found
wopl2ofm: käsku ei ole
wopl2ofm: không tìm thấy lệnh
wopl2ofm: komanda nerasta
wopl2ofm: Kommando nicht gefunden.
wopl2ofm: kommandot finns inte
wopl2ofm: komut yok
wopl2ofm: nie znaleziono polecenia
wopl2ofm: níor aimsíodh an t-ordú
wopl2ofm: no se encontró la orden
wopl2ofm: no s'ha trobat l'ordre
wopl2ofm: opdracht niet gevonden
wopl2ofm: parancs nem található
wopl2ofm: perintah tidak ditemukan
wopl2ofm: príkaz nenájdený
wopl2ofm: příkaz nenalezen
wopl2ofm: команда не найдена
wopl2ofm: командата не е открита
wopl2ofm: 命令找不到
wopl2ofm: コマンドが見つかりません