404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=0-1ONhpNmV2vrmfM0O905l46GhCtd37yObbhn2Eqr7v1NeDFc91pUOEuVzODnv4r1OZpwEGxv9YQH6qlV_dQyZjdInGPjyVcoaolzfARJRM%2C was not found on this server. That’s all we know.