Getting all deploy keys through the API always return 403

Summary

Getting all deploy keys through the API always return 403 (Unauthorized)

Steps to reproduce

I used the following api url endpoint to fetch all deploy keys but I always get a 403.

Tried to reset the API Key but it still happens.

https://gitlab.com/api/v3/deploy_keys?private_token=API-KEY

Expected behavior

List of deploy keys

Actual behavior

403 Forbidden