testnet futures_socket doesn't receive messages

[one2gov]

  master = await AsyncClient.create("key",
                                      "secret, testnet=True")
    bm = BinanceSocketManager(master)

    ts = bm.futures_socket()
    async with ts as tscm:
        while True:
            try:
                res = await tscm.recv()
                print('res', res)

but it works without Testnet