404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=k61wdRnV1IRsLg8GFMzjd-WD29WNwYTIliU9_4aEkENgdFO9ENtSN3ZJzIevDh7ubw5uVqBz291z6MM7hhVeCugcGHkJQiG3dXL1j3_2cV0%2C was not found on this server. That’s all we know.