Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-24T12:16:05","request-id":"0a47439a-9db3-4097-afd4-7cbe0e527f4a","client-request-id":"0a47439a-9db3-4097-afd4-7cbe0e527f4a"}}}"