404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=VNhcXiSH29adO5mK2xRlphvM1sml2jjXlY9lE35HpR7TSMuXD_AW7bWk7eqBsM8xAsfunYboV4ioGEHITPiV8A%2C%2C was not found on this server. That’s all we know.