First Get Request

(I use Postman for testing)

Why always the first request with GET returns 0 in the Game? , I use Node.js how server .From Postman it comes out right the first time

Another thing that I have seen is that something like this happens:
Game: GET {return: 1}
Game: GET {return: 2}
Postman: GET {return: 4}
Game: GET {return: 3}
Game: GET {return: 5}
And with differences of seconds