Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-06T10:33:32","request-id":"3160a0ee-5764-4abd-80d0-385694213526","client-request-id":"3160a0ee-5764-4abd-80d0-385694213526"}}}"