Unable to locate package wireguard

[qnyblog]

Unable to locate package wireguard (i am using digitalocean's vps, Ubuntu 20.04). thank you

root@ubuntu-s-1vcpu-1gb-nyc1-01:# git clone https://github.com/fastai/wireguard-fast.git
Cloning into 'wireguard-fast'...
remote: Enumerating objects: 92, done.
remote: Counting objects: 100% (92/92), done.
remote: Compressing objects: 100% (79/79), done.
remote: Total 92 (delta 50), reused 32 (delta 13), pack-reused 0
Unpacking objects: 100% (92/92), 25.18 KiB | 1.26 MiB/s, done.
root@ubuntu-s-1vcpu-1gb-nyc1-01:# cd wireguard-fast
root@ubuntu-s-1vcpu-1gb-nyc1-01:~/wireguard-fast# sudo ./wireguard-fast.sh

Use VPN for all internet traffic? [y/n] y

of clients? [Betwen 1 and 253] 5

Server hostname/IP? 143.198.116.220
E: Unable to locate package wireguard