Install Failing Looking for IP: 91.189.91.83 80

[solarmax1]

I am trying to install InvenTree on a Raspberry Pi 4. I've installed Ubuntu 22.04.5 LTS (64-bit) using the RPi Installer. When I try to run the InvenTree Quick Script, it fails with the error:

Err:6 http://security.ubuntu.com/ubuntu focal-security/main arm64 Packages
404 Not Found [IP: 91.189.91.83 80]

Here is the entire output:
pi@pi-desktop:~$ sudo wget -qO install.sh https://get.inventree.org && sudo bash install.sh
[sudo] password for pi:

Installer for InvenTree - source: inventree/stable

Detected distribution: Ubuntu 22.04

Installing required packages for download

Selecting previously unselected package apt-transport-https.
(Reading database ... 151593 files and directories currently installed.)
Preparing to unpack .../apt-transport-https_2.4.13_all.deb ...
Unpacking apt-transport-https (2.4.13) ...
Setting up apt-transport-https (2.4.13) ...

Installing libssl1.1

deb http://security.ubuntu.com/ubuntu focal-security main
Hit:1 http://ports.ubuntu.com/ubuntu-ports jammy InRelease
Hit:2 http://ports.ubuntu.com/ubuntu-ports jammy-updates InRelease
Hit:3 http://ports.ubuntu.com/ubuntu-ports jammy-backports InRelease
Hit:4 http://ports.ubuntu.com/ubuntu-ports jammy-security InRelease
Get:5 http://security.ubuntu.com/ubuntu focal-security InRelease [128 kB]
Ign:6 http://security.ubuntu.com/ubuntu focal-security/main arm64 Packages
Get:7 http://security.ubuntu.com/ubuntu focal-security/main Translation-en [506 kB]
Get:8 http://security.ubuntu.com/ubuntu focal-security/main arm64 DEP-11 Metadata [65.3 kB]
Get:9 http://security.ubuntu.com/ubuntu focal-security/main DEP-11 48x48 Icons [24.2 kB]
Get:10 http://security.ubuntu.com/ubuntu focal-security/main DEP-11 64x64 Icons [42.9 kB]
Get:11 http://security.ubuntu.com/ubuntu focal-security/main DEP-11 64x64@2 Icons [29 B]
Get:12 http://security.ubuntu.com/ubuntu focal-security/main arm64 c-n-f Metadata [14.1 kB]
Err:6 http://security.ubuntu.com/ubuntu focal-security/main arm64 Packages
404 Not Found [IP: 91.189.91.83 80]
Ign:6 http://security.ubuntu.com/ubuntu focal-security/main arm64 Packages
Err:6 http://security.ubuntu.com/ubuntu focal-security/main arm64 Packages
404 Not Found [IP: 91.189.91.83 80]
Ign:6 http://security.ubuntu.com/ubuntu focal-security/main arm64 Packages
Err:6 http://security.ubuntu.com/ubuntu focal-security/main arm64 Packages
404 Not Found [IP: 91.189.91.83 80]
Fetched 781 kB in 3s (255 kB/s)
Reading package lists... Done
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/focal-security/main/binary-arm64/Packages 404 Not Found [IP: 91.189.91.83 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.

Do you have any ideas on how to resolve this?

[solarmax1]

I just noticed I'm running Ubuntu 22.04. I see the latest supported version is 20.04. Trying that now.