Websocket Connection Error

Dear Sir
This is My first post in community
firstly i am very thankful to Dhan for adding me in traders community. and i am very excited when i was saw Imran Sir Python Algo trading series (Basic) and started explore the same. but I have facing below error even after purchase data subscription
D:\PYTHON\3. Session3 - Codebase\Dhan codebase>PY Dhan_websocket.py
Reading existing file all_instrument 2025-05-14.csv
Error: single positional indexer is out-of-bounds for NSE
Watchlist changed. Reconnecting the feed…
Error: single positional indexer is out-of-bounds for NSE
Disconnected from WebSocket feed.
Authorizing…
Authorization successful!
Disconnected: Invalid Client ID
WebSocket connection error: no close frame received or sent
Reconnecting Again…
Watchlist changed. Reconnecting the feed…
Error: single positional indexer is out-of-bounds for NSE
Disconnected from WebSocket feed.
Authorizing…

so please resolve the issue