response = client.get("/users/me", headers={"Authorization": "Bearer nonexistent"})
    assert response.status_code == 401, response.text
    assert response.json() == {"detail": "Could not validate credentials"}
    assert response.headers["WWW-Authenticate"] == 'Bearer scope="me"'


def test_incorrect_token_type(mod: ModuleType):
    client = TestClient(mod.app)
    response = client.get(

    response = client.get("/users/me", headers={"Authorization": "Bearer nonexistent"})
    assert response.status_code == 401, response.text
    assert response.json() == {"detail": "Could not validate credentials"}
    assert response.headers["WWW-Authenticate"] == "Bearer"


def test_incorrect_token_type(mod: ModuleType):
    client = TestClient(mod.app)
    response = client.get(

## 0.122.0

### Fixes

* 🐛 Use `401` status code in security classes when credentials are missing. PR [#13786](https://github.com/fastapi/fastapi/pull/13786) by [@YuriiMotov](https://github.com/YuriiMotov).