Install temboard-agent failed for ubuntu 20.04

[UNICA-nice]

root@fact-bdd:~# curl https://apt.dalibo.org/labs/debian-dalibo.asc | apt-key add -
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  1660  100  1660    0     0   8469      0 --:--:-- --:--:-- --:--:--  8426
OK

root@fact-bdd:~# apt-get update
Hit:1 http://archive.ubuntu.com/ubuntu focal InRelease
Get:2 http://archive.ubuntu.com/ubuntu focal-updates InRelease [128 kB]
Ign:3 https://apt.dalibo.org/labs focal-dalibo InRelease
Err:4 https://apt.dalibo.org/labs focal-dalibo Release
  404  Not Found [IP: 212.129.33.181 443]
Hit:5 http://apt.postgresql.org/pub/repos/apt focal-pgdg InRelease
Hit:6 http://archive.ubuntu.com/ubuntu focal-backports InRelease
Get:7 http://archive.ubuntu.com/ubuntu focal-security InRelease [128 kB]
Get:8 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [3550 kB]
Get:9 http://archive.ubuntu.com/ubuntu focal-security/main amd64 Packages [3182 kB]
Reading package lists... Done

> **_E: The repository 'https://apt.dalibo.org/labs focal-dalibo 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.

root@fact-bdd:~# more /etc/os-release
NAME="Ubuntu"
VERSION="20.04.6 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.6 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal

i don't resolve this error cant you help me please.
Version temboard installed

[root@temboardpg ~]# temboard --version
temBoard 8.2.1 (/usr/bin/temboard)
System Red Hat Enterprise Linux 9.4 (Plow)
Python 3.9.18 (/usr/bin/python3)
cryptography 36.0.1
Tornado 6.1
libpq 16.4
psycopg2 2.9.9 (dt dec pq3 ext lo64)
SQLAlchemy 1.4.45

Thank you

[bersace]

What return apt show temboard ?

[UNICA-nice]

root@fact-bdd:~# apt show temboard
N: Unable to locate package temboard
N: Unable to locate package temboard
E: No packages found

[bersace]

root@fact-bdd:~# apt show temboard N: Unable to locate package temboard N: Unable to locate package temboard E: No packages found

How did you install temboard ? pip ? We don't provide package for focal.

See https://temboard.readthedocs.io/en/v8/compatibility_guide/ for the compatibility guide. The doc actually miss jammy package.

9.0 is about to land with noble package.

[UNICA-nice]

Install teamboard v8
sudo dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm
yum install -y https://yum.dalibo.org/labs/dalibo-labs-4-1.noarch.rpm
yum install temboard
temboard --version
systemctl enable --now temboard
systemctl start temboard
systemctl status temboard

Install agent
echo deb https://apt.dalibo.org/labs $(lsb_release -cs)-dalibo main > /etc/apt/sources.list.d/dalibo-labs.list
curl https://apt.dalibo.org/labs/debian-dalibo.asc | apt-key add -

apt-get update ---> KO

root@fact-bdd:~# apt-get update
Hit:1 http://archive.ubuntu.com/ubuntu focal InRelease
Get:2 http://archive.ubuntu.com/ubuntu focal-updates InRelease [128 kB]
Ign:3 https://apt.dalibo.org/labs focal-dalibo InRelease
Err:4 https://apt.dalibo.org/labs focal-dalibo Release
404 Not Found [IP: 212.129.33.181 443]
Hit:5 http://apt.postgresql.org/pub/repos/apt focal-pgdg InRelease
Hit:6 http://archive.ubuntu.com/ubuntu focal-backports InRelease
Get:7 http://archive.ubuntu.com/ubuntu focal-security InRelease [128 kB]
Get:8 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [3550 kB]
Get:9 http://archive.ubuntu.com/ubuntu focal-security/main amd64 Packages [3182 kB]
Reading package lists... Done
E: The repository 'https://apt.dalibo.org/labs focal-dalibo 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.