mojo: command not found

Have You tried accessing the binary with the full path?

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/mojo - from package: libmojolicious-perl

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