The requested resource doesn't exist

The requested resource doesn't exist

Hello Zoho,

I'm trying to import csv to Zoho CRM using Bulk write API implemented in native Python. I'm getting the below error which I really don't understand.



As you can see, I uploaded my file successfully and got the file_id as mentioned in Step 2 of https://www.zoho.com/crm/developer/docs/api/v2/bulk-write/overview.html
I sent the POST request to initiate the Bulk Write job with the file_id I got but the server responded that my file_id doesn't exist. Which doesn't make sense at all. 
I wonder if there is anything wrong with my request body.
Thank you for your help.