Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-28T15:18:40","request-id":"63b70c5b-2fae-4048-bf6e-a78827560e77","client-request-id":"63b70c5b-2fae-4048-bf6e-a78827560e77"}}}"