Order placement failed: HTTPSConnectionPool(host='apiconnect.angelbroking.in', port=443)

[smtkmr202]

Order placement failed: HTTPSConnectionPool(host='apiconnect.angelbroking.in', port=443): Max retries exceeded with url: /rest/secure/angelbroking/order/v1/placeOrder (Caused by NameResolutionError("<urllib3.connection.HTTPSConnection object at 5CD0>: Failed to resolve 'apiconnect.angelbroking.in' ([Errno 11001] getaddrinfo failed)"))
Traceback (most recent call last):

please provide the solution. when order is triggered via API its not working