404. That’s an error.

The requested URL /translate_c?depth=1&tl=ja&u=https://dic.nicovideo.jp/a/%E3%82%A4%E3%82%AE%E3%83%AA%E3%82%B9%E7%8E%8B%E3%81%AE%E4%B8%80%E8%A6%A7 was not found on this server. That’s all we know.