Error in implementing dialogflow conversational bot

(myvenv) C:\Users\prkhr\OneDrive\Desktop\ML DL stuff\project stuff\news000069bot>python conversational_bot.py
Traceback (most recent call last):
File “C:\Users\prkhr\OneDrive\Desktop\ML DL stuff\project stuff\news000069bot\conversational_bot.py”, line 3, in
from utils import get_reply
File “C:\Users\prkhr\OneDrive\Desktop\ML DL stuff\project stuff\news000069bot\utils.py”, line 5, in
dialogflow_session_client = dialogflow.ContextsClient()
File “C:\Users\prkhr\OneDrive\Desktop\ML DL stuff\project stuff\news000069bot\myvenv\lib\site-packages\google\cloud\dialogflow_v2\services\contexts\client.py”, line 351, in init
self._transport = Transport(
File “C:\Users\prkhr\OneDrive\Desktop\ML DL stuff\project stuff\news000069bot\myvenv\lib\site-packages\google\cloud\dialogflow_v2\services\contexts\transports\grpc.py”, line 150, in init
super().init(
File “C:\Users\prkhr\OneDrive\Desktop\ML DL stuff\project stuff\news000069bot\myvenv\lib\site-packages\google\cloud\dialogflow_v2\services\contexts\transports\base.py”, line 110, in init
credentials, _ = google.auth.default(
File “C:\Users\prkhr\OneDrive\Desktop\ML DL stuff\project stuff\news000069bot\myvenv\lib\site-packages\google\auth_default.py”, line 488, in default
raise exceptions.DefaultCredentialsError(_HELP_MESSAGE)
google.auth.exceptions.DefaultCredentialsError: Could not automatically determine credentials. Please set GOOGLE_APPLICATION_CREDENTIALS or explicitly create credentials and re-run the application. For more information, please see https://cloud.google.com/docs/authentication/getting-started

First check your credentials are correct and then confirm that you are passing them in the correct way

second, can you please confirm once from the documentation that you are passing the credentials in correct format.
else , you can share your code and i can check it.