Auth Error: Incorrect client credentials

[LVSSandeepKumar]

The error might seem silly, but I did exactly as you did. No typos, no copy paste problems etc.
I have tried generating a new token, updating it in .env.local, restarting the server and still no use.

{ "error": "incorrect_client_credentials", "error_description": "The client_id and/or client_secret passed are incorrect.", "error_uri": "/apps/managing-oauth-apps/troubleshooting-oauth-app-access-token-request-errors/#incorrect-client-credentials" }