'Testing Gamelift in local, can only create 1 game session?

I am testing our application in local, and it seems like i can only create 1 game session using Gamelift local.

so what i did is I run gamelift local

java -jar GameLiftLocal.jar -p 9080

run the custom gamelift server i wrote in C# and Unity and use CLI to create game session

AWS gamelift create-game-session --endpoint-url http://localhost:9080 --maximum-player-session-count 2 --fleet-id fleet-123d

and first run, it succeed and creates the game session. when I create another gamesession by issuing the same command above it results to

HTTP-Dispatcher - No available process.

Why is this? can we only create one Game Session in local?

amazon-gamelift

Solution 1:^[1]

If you are trying to make another game session, you need to run multiple game server processes.

GameLift can catch the game session's status by receiving Server-side API call from game server process.

I think this diagram can help you.:)

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Solution	Source
Solution 1	jinsengparkk