404. That’s an error.

The requested URL /_/+1/confirm?hl=ja&url=http://komari.blue/%E8%A1%80%E7%AE%A1%E3%81%AE%E3%81%93%E3%81%A8%E3%82%92%E8%8B%B1%E8%AA%9E%E3%81%A7/attachment/1186150/ was not found on this server. That’s all we know.