404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=w7fz4caXIbKir-dOpikSYOJAZvnxt8ZaRLMarJl41ZzoqEcwIWit9XVPbvPmFPizjKpLJoXEZbXGgB7koPvH_0U0JWG9n1gmwLufKGrTrd9DSoPPGy4_6-oW4VXdjzgkypI5889BglT6xhDhiabITg%2C%2C was not found on this server. That’s all we know.