jwt3: 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/jwt3 - from package: python3-jwt

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

Error in other languages:
jwt3: bevel nie gevind nie
jwt3: comandă negăsită
jwt3: comando não encontrado
jwt3: commande introuvable
jwt3: command not found
jwt3: käsku ei ole
jwt3: không tìm thấy lệnh
jwt3: komanda nerasta
jwt3: Kommando nicht gefunden.
jwt3: kommandot finns inte
jwt3: komut yok
jwt3: nie znaleziono polecenia
jwt3: níor aimsíodh an t-ordú
jwt3: no se encontró la orden
jwt3: no s'ha trobat l'ordre
jwt3: opdracht niet gevonden
jwt3: parancs nem található
jwt3: perintah tidak ditemukan
jwt3: príkaz nenájdený
jwt3: příkaz nenalezen
jwt3: команда не найдена
jwt3: командата не е открита
jwt3: 命令找不到
jwt3: コマンドが見つかりません