kiteconnect.exceptions.InputException: cipher: message authentication failed

tmskbl1989

Traceback (most recent call last):
File "C:\Users\thiya\PycharmProjects\ZerodhaKite\venv\lib\site-packages\kiteconnect\connect.py", line 324, in margins
return self._get("user.margins")
File "C:\Users\thiya\PycharmProjects\ZerodhaKite\venv\lib\site-packages\kiteconnect\connect.py", line 839, in _get
return self._request(route, "GET", url_args=url_args, params=params, is_json=is_json)
File "C:\Users\thiya\PycharmProjects\ZerodhaKite\venv\Scripts\chartink_kite_amo_mean_reversion-main\kiteext.py", line 170, in _request
raise exp(data['message'], code=r.status_code)
kiteconnect.exceptions.InputException: cipher: message authentication failed

Process finished with exit code 1

I have purchased access token but still i am getting authentication failed error. Kindly help. Thank you.