Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-19T05:14:21","request-id":"fb56b141-5a5b-4a98-a719-1eaaacc79c8c","client-request-id":"fb56b141-5a5b-4a98-a719-1eaaacc79c8c"}}}"