ZOho CRM API endpoint to fetch Notes.not working.

ZOho CRM API endpoint to fetch Notes.not working.

Hello with reference to the documentations given for the notes https://www.zoho.com/crm/developer/docs/api/v5/get-notes.html
The API looks pretty simple and PUT andd GET should work.
i was able to create the access token and it looked fine. but when i used for getting notes i am just getting 204, No Content error.
trying endpoint:
https://www.zohoapis.in/crm/v5/Notes
and