404. That’s an error.
The requested URL /bookmarks/mark?op=edit&bkmk=http%3A%2F%2Fpinballmachinesworld.com%2F2018%2F11%2F27%2F1973-gottlieb-jack-in-the-box-4-player-pinball%2F&title=1973%20Gottlieb%20Jack%20In%20The%20Box%204%20Player%20Pinball
was not found on this server. That’s all we know.