Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-06-28T04:03:51","request-id":"6a61e7c5-298b-41b5-ae3e-45766c3ab9b5","client-request-id":"6a61e7c5-298b-41b5-ae3e-45766c3ab9b5"}}}"