404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=9WHDJub7P_71KrvZzgMUY3kKgQ68A28Nzo-TX9SwjWt3BeqzecsFDMrnqSsi8h7p0tq-_b2_nYn2ex9E9jiMuQ%2C%2C was not found on this server. That’s all we know.