Data not streaming

I am just getting started with Alpaca. I set up all my keys etc and tried to get data streaming. It worked once or twice but now isn’t streaming. I am using wscat to debug things. It connects and I am able to authenticate and subscribe but I am not getting any data. Here is my session - with the keys appropriately masked.

$ wscat -c wss://stream.data.alpaca.markets/v2/iex

Connected (press CTRL+C to quit)

< [{“T”:“success”,“msg”:“connected”}]

{“action”: “auth”, “key”:“PK*************”, “secret”:"**************" }

< [{“T”:“success”,“msg”:“authenticated”}]

{“action”:“subscribe”,“trades”:[“AAPL”]}

< [{“T”:“subscription”,“trades”:[“AAPL”],“quotes”:[],“bars”:[]}]

I am getting nothing. I have tried different subscriptions and still get nothing. Here is another subscription I tried and the answer back

{“action”: “subscribe”, “quotes”:[“AAPL”,“AMD”]}

< [{“T”:“subscription”,“trades”:[],“quotes”:[“AAPL”,“AMD”],“bars”:[]}]

It still just sits there with no data.

I have also tried to get it working with the python websocket package. It has basically the same results. Here is my code.

import websocket, json
SYMBOL = “AAPL”
TICKERS = [“AAPL”,“AMD”]
API_KEY = “PK*********”
SECRET_KEY = “********”
connection_url = “wss://stream.data.alpaca.markets/v2/iex”

def on_open(ws):
print(“Connection opened”)
auth_data = {
“action”: “auth”,
“key”: API_KEY,
“secret”: SECRET_KEY
}
ws.send(json.dumps(auth_data))

channel_data = {
    "action": "subscribe",
    "quotes": TICKERS
}
ws.send(json.dumps(channel_data))

def on_message(ws, message):
print("Message: ")
print(message)

def on_close(ws):
print(“Connection closed”)

ws = websocket.WebSocketApp(connection_url, on_open=on_open, on_message=on_message, on_close=on_close)
ws.run_forever()

Which results in:

Connection opened
Message:
[{“T”:“success”,“msg”:“connected”}]
Message:
[{“T”:“success”,“msg”:“authenticated”}]
Message:
[{“T”:“subscription”,“trades”:[],“quotes”:[“AAPL”,“AMD”],“bars”:[]}]

but nothing after that.

Am I doing something wrong?

Thank you.