getting error while using the url

https://apiconnect.angelone.in/rest/secure/angelbroking/marketData/v1/nseIntraday

and

https://apiconnect.angelone.in/rest/secure/angelbroking/marketData/v1/bseIntraday

to get the data in nse and bse

output :

{'success': False, 'message': 'Invalid Token', 'errorCode': 'AG8001', 'data': ''}