Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-21T10:47:54","request-id":"6c65692d-4d11-4707-8d4d-302c41eac758","client-request-id":"6c65692d-4d11-4707-8d4d-302c41eac758"}}}"