Key Error :access_token While requesting access token using windows Outlook api token url

Below is the Traceback

[07/Feb/2020 13:15:44] "GET /tutorial/gettoken?code=M75b5bb08-f43a-3749-bcd6-bdc1595306d9 HTTP/1.1" 301 0

Internal Server Error: /tutorial/gettoken/
Traceback (most recent call last):
  File "C:\Users\lenovo\Desktop\myapi\v\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\Users\lenovo\Desktop\myapi\v\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Users\lenovo\Desktop\myapi\v\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\lenovo\Desktop\myapi\python_tutorial\tutorial\views.py", line 17, in gettoken
    access_token = token['access_token']Below is th Trace back 
KeyError: 'access_token'

I  was Following this tutorial https://docs.microsoft.com/en-us/outlook/rest/python-tutorial  and had an issue of acces_token , Can anyone  help me how to solve that ?

I have double checked for every line of my code and done with checking redirect_uri also , It would be grateful of you if you can help .Thanks . Checked StackOverFlow also ,it seems like there is no relevant answer for this is the response error i am getting while requesting for acces_token

auth_code	'M75b5bb08-f43a-3749-bcd6-bdc1595306d9'
redirect_uri	'http://localhost:8000/tutorial/gettoken/'
request	<WSGIRequest: GET '/tutorial/gettoken/?code=M75b5bb08-f43a-3749-bcd6-bdc1595306d9'>
token	{'correlation_id': 'b7bbadc7-9031-419c-8e5e-2be3fddfbf22', 'error': 'invalid_client', 'error_codes': [50011], 'error_description': 'AADSTS50011: The reply URL specified in the request ' 'does not match the reply URLs configured for the ' "application: '38ae3415-e1fb-4829-8381-396fbeee2230'. " 'More details: Reply address did not match because ' 'requested address did not have a trailing slash.\r\n' 'Trace ID: 48237da8-3830-488c-bd49-e081435a6700\r\n' 'Correlation ID: b7bbadc7-9031-419c-8e5e-2be3fddfbf22\r\n' 'Timestamp: 2020-02-07 07:45:44Z', 'error_uri': 'https://login.microsoftonline.com/error?code=50011', 'timestamp': '2020-02-07 07:45:44Z', 'trace_id': '48237da8-3830-488c-bd49-e081435a6700'}

But the thing is I have thoroughly checked my code and ithere seems no error . I have been getting this error since last night ..Please HELP if possible

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