I cannot download the required packages to my system. I get a 404 error:

W: Failed to fetch http://ppa.launchpad.net/wireguard/wireguard/ubuntu/dists/precise/main/source/Sources  404  Not Found

W: Failed to fetch http://ppa.launchpad.net/wireguard/wireguard/ubuntu/dists/precise/main/binary-amd64/Packages  404  Not Found

W: Failed to fetch http://ppa.launchpad.net/wireguard/wireguard/ubuntu/dists/precise/main/binary-i386/Packages  404  Not Found

Instart Logic 
 World's First Endpoint-Aware Application Delivery Solution
Steve Pagan 
Network Engineer - Operations

Phone: 650-919-8856 | Email: spagan@instartlogic.com 
Instart Logic | 450 Lambert Ave, Palo Alto, CA 94306 | instartlogic.com