issue with greek data

[J300558]

---

LOGIN FUNCTION

-----------------------

def login_once():
print("🔐 Logging in...")
totp = pyotp.TOTP(totp_secret).now()
smart = SmartConnect(api_key)
session = smart.generateSession(client_code, pin, totp)
jwt = session['data']['jwtToken']
return jwt

-----------------------

MAIN EXECUTION

-----------------------

if name == "main":
jwt_token = login_once()

# ✅ Your machine info
local_ip =
public_ip =
mac_addr =

url = "https://apiconnect.angelone.in/rest/secure/angelbroking/marketData/v1/optionGreek"

headers = {
    "Authorization": f"Bearer {jwt_token}",
    "X-ClientLocalIP": local_ip,
    "X-ClientPublicIP": public_ip,
    "X-MACAddress": mac_addr,
    "X-UserType": "USER",
    "X-SourceID": "WEB",
    "Content-Type": "application/json",
    "Accept": "application/json"
}

payload = {
    "name": "NIFTY",            
    "expirydate": "26JUN2025"   
}

print("📡 Fetching Greeks...")
try:
    response = requests.post(url, headers=headers, json=payload, timeout=10)
    data = response.json()
    print("📦 Full response:")
    print(data)

    if "data" in data and data["data"]:
        print("✅ Option Greeks:")
        for option in data["data"]:
            print(
                f"{option['strikePrice']} {option['optionType']} | "
                f"Δ={option['delta']} Γ={option['gamma']} Θ={option['theta']} "
                f"Vega={option['vega']} IV={option['impliedVolatility']} Vol={option['tradeVolume']}"
            )
    else:
        print("⚠️ No data found in response or empty 'data' array.")
except Exception as e:
    print("❌ Failed to fetch or parse response:", e)

getting error as follwoing
🔐 Logging in...
[I 250625 16:22:56 smartConnect:121] in pool
📡 Fetching Greeks...
📦 Full response:
{'success': False, 'message': 'Invalid Token', 'errorCode': 'AG8001', 'data': ''}
⚠️ No data found in response or empty 'data' array.