lava-dispatch: 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/lava-dispatch - from package: lava-dispatcher

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

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