minprep: 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/lib/voxbo/bin/minprep - from package: voxbo

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

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