Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-20T22:25:43","request-id":"2eed00ee-38c6-4978-ba39-2caef8a69389","client-request-id":"2eed00ee-38c6-4978-ba39-2caef8a69389"}}}"