FILE_NOT_SUPPORTED Error making Bulk Write request

Hello, I am trying to perform a Bulk Write request to the Leads module of Zoho CRM. I am able to successfully upload a zipped CSV file but I get the following error when I initiate the bulk write job:

400 - {"status":"error","code":"FILE_NOT_SUPPORTED","message":"File not supported for bulk write","details":{}}

Here is the CSV data:

Email,First_Name,Last_Name
admin@mydomain.com,john,doe

And here is the request I am using to upload the zipped CSV

curl "https://content.zohoapis.com/crm/v5/upload" \
-X POST \
-H "Authorization: Zoho-oauthtoken 1000.xxx.xxx" \
-H "X-CRM-ORG: 64990321" \
-H "feature: bulk-write" \
-F "file=@leads.zip"

I received a file ID from this upload request and make this bulk write request

curl "https://www.zohoapis.com/crm/bulk/v5/write"
-X POST
-H "Authorization: Zoho-oauthtoken 1000.my-token.xxx"
-H "Content-Type: application/json"
-d "@app/services/zoho/payload.json"

And here is the payload.json

{
"character_encoding": "UTF-8",
"operation": "insert",
"ignore_empty": true,
"resource": [
{
"type": "data",
"module": { "api_name": "Leads" },
"file_id": "1767869000159543001"
}
]
}

Can you please tell me why I get the error "File not supported for bulk write"

I know that uploaded files cannot be reused multiple times, this error happens the first time I attempt to import an uploaded file.

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