Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-06-30T04:51:08","request-id":"f290f359-2b72-42fa-be45-124e9d6d162c","client-request-id":"f290f359-2b72-42fa-be45-124e9d6d162c"}}}"