I get "Invalid Session Credentials"

I have been using Python API for months now. Last 3 weeks, I get the following error.


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Please call me

---------------------------------------------------------------------------
TokenException Traceback (most recent call last)
in ()
18 request_token="wzPOZe6346Wf8H4qDaXj4wZz6F7cC868"
19 kite = KiteConnect(api_key=api_key)
---> 20 data = kite.request_access_token(request_token, secret=api_secret)
21 kite.set_access_token(data["access_token"])

/opt/conda/lib/python3.5/site-packages/kiteconnect/__init__.py in request_access_token(self, request_token, secret)
267 resp = self._post("api.validate", {
268 "request_token": request_token,
--> 269 "checksum": checksum
270 })
271

/opt/conda/lib/python3.5/site-packages/kiteconnect/__init__.py in _post(self, route, params)
595 def _post(self, route, params=None):
596 """Alias for sending a POST request."""
--> 597 return self._request(route, "POST", params)
598
599 def _put(self, route, params=None):

/opt/conda/lib/python3.5/site-packages/kiteconnect/__init__.py in _request(self, route, method, parameters)
682 code=r.status_code))
683 elif exp:
--> 684 raise(exp(data["message"], code=r.status_code))
685 else:
686 raise(ex.GeneralException(data["message"], code=r.status_code))

TokenException: Invalid session credentials