Why does langchain serve use a different port than configured?

[martasd]

I have the following code to run uvicorn server in my server.py module which is similar to the examples given in the docs:

if __name__ == "__main__":
    uvicorn.run(app, host="localhost", port=8080)

When I execute langchain serve, however, it does not listen on 8080, but on the default 8000 instead. Why does it not take into account the port specified in uvicorn.run()?