404. That’s an error.

The requested URL /bookmarks/mark?op=add&bkmk=http%3A%2F%2Fkamo-log.com%2Fkamipuro%2F106-2%2Fattachment%2F2020y06m01d_154231607%2F&title=2020y06m01d_154231607 was not found on this server. That’s all we know.