404. That’s an error.

The requested URL /_/+1/confirm?hl=ja&url=http://mengo.info/2019/02/18/2019%E5%B9%B4%E3%82%82%E3%82%88%E3%82%8D%E3%81%97%E3%81%8F%E3%81%8A%E9%A1%98%E3%81%84%E3%81%97%E3%81%BE%E3%81%99/ was not found on this server. That’s all we know.