wierd trades when using websockets on python

Hi,
I keep getting strange trades when i use start_trade_socket with my testnet account.
Please find below the code i’m using:
client=Client(api_key, secret_key)
client.API_URL=‘https://testnet.binance.vision/api’
bm = BinanceSocketManager(client)
conn_key=bm.start_trade_socket(‘BNBUSDT’,update_database)
bm.start()

What do you mean by “strange”? Which environment do you want to connect to get wss data.