urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='nseindia.com', port=443): Max retries exceeded with url: /api/option-chain-indices?symbol= NIFTY (Caused by ProxyError('Cannot connect to proxy.', OSError('Tunnel connection failed: 403 Forbidden')))
requests.exceptions.ProxyError: HTTPSConnectionPool(host='nseindia.com', port=443): Max retries exceeded with url: /api/option-chain-indices?symbol=NI FTY (Caused by ProxyError('Cannot connect to proxy.', OSError('Tunnel connection failed: 403 Forbidden')))
getting above errors to access this site https://nseindia.com/api/option-chain-indices?symbol=NIFTY please advice.