TypeError: 'NoneType' object is not subscriptable what is the error?

Question

Python

I have an error TypeError: 'NoneType' object is not
subscriptable New to python
Module - python

if gun == "профиль":
            try:
                send_msg(event.peer_id,f'Профиль игрока - {get(event.user_id, token)}\n your {lox(event.peer_id)["id"]}\n your money {lox(event.user_id)["money"]}\n admin - {lox(event.user_id)["admin"]}')