Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-10T06:30:39","request-id":"efdfb229-f20d-411c-9d0a-3f401114c139","client-request-id":"efdfb229-f20d-411c-9d0a-3f401114c139"}}}"