Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-02-28T11:04:40","request-id":"25fdcfbb-92f6-4edf-842f-fefe72b58001","client-request-id":"25fdcfbb-92f6-4edf-842f-fefe72b58001"}}}"