Can't Install libcs50 in Ubuntu 23.04

[b0bsoares]

sudo apt update ; sudo apt install libcs50
Hit:1 http://archive.ubuntu.com/ubuntu lunar InRelease
Get:2 http://archive.ubuntu.com/ubuntu lunar-updates InRelease [90.7 kB]
Hit:3 http://archive.ubuntu.com/ubuntu lunar-backports InRelease
Get:4 http://security.ubuntu.com/ubuntu lunar-security InRelease [90.7 kB]
Ign:5 https://packagecloud.io/cs50/repo/ubuntu lunar InRelease
Err:6 https://packagecloud.io/cs50/repo/ubuntu lunar Release
404 Not Found [IP: 54.183.41.86 443]
Reading package lists... Done
E: The repository 'https://packagecloud.io/cs50/repo/ubuntu lunar Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package libcs50