lavapdu-runner: 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/sbin/lavapdu-runner - from package: lavapdu-daemon

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

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