Not enough permissions to access: GET /fieldsOfStudy

I'm trying to call LinkedIn V2 API to call a specific API which is:

GET https://api.linkedin.com/v2/fieldsOfStudy

So I followed the following tutorial to create an application, linked it with my account on LinkedIn and verify it. Everything worked fine and I have an Access Token.

But I'm always having the following response:

{
    "serviceErrorCode": 100,
    "message": "Not enough permissions to access: GET /fieldsOfStudy",
    "status": 403
}

And here are the permissions in my app:

OAuth 2.0 scopes

Permissions your app can request from users

r_emailaddress

r_liteprofile

w_member_social