Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-04T04:23:32","request-id":"e3d0e07e-c653-4e99-b08c-32c0cc6ef2e3","client-request-id":"e3d0e07e-c653-4e99-b08c-32c0cc6ef2e3"}}}"