Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-01-18T21:40:03","request-id":"86dc1087-f8da-4d4c-ade8-a3f52eb750ba","client-request-id":"86dc1087-f8da-4d4c-ade8-a3f52eb750ba"}}}"