Script stop at APT-GET - Githubissues

When I run the script, it stop after the apt get update command
* Pterodactyl-AutoThemes Script @ v1.2

* Copyright (C) 2021 - 2022, Ferks-FK.
* https://github.com/Ferks-FK/Pterodactyl-AutoThemes

* This script is not associated with the official Pterodactyl Project.
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* Which theme do you want to install?

[0] Restore Panel Backup (To remove some theme and restore your old panel.)
[1] Install Dracula (Only 1.6.6 and 1.7.0)
[2] Install Enola (Only 1.6.6 and 1.7.0)
[3] Install Twilight (Only 1.6.6 and 1.7.0)
[4] Install Zing Theme (Only 1.6.6 and 1.7.0)
[5] Install Flanco Theme (Only 1.6.6 and 1.7.0)
[6] Cancel Installation

* Input 0-6: 1

###############################################
* Looking for your pterodactyl installation...
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##################################################################
* Installation of the panel found, continuing the installation...
##################################################################

#########################################################
* Checking if the addon is compatible with your panel...
#########################################################

#######################
* Compatible Version!
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##############################
* Installing dependencies...
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## Installing the NodeSource Node.js 16.x repo...

## Populating apt-get cache...

+ apt-get update
Hit:1 http://asi-fs-d.contabo.net/ubuntu focal InRelease
Hit:2 http://asi-fs-d.contabo.net/ubuntu focal-updates InRelease
Hit:3 http://asi-fs-d.contabo.net/ubuntu focal-backports InRelease
Ign:4 http://ppa.launchpad.net/certbot/certbot/ubuntu focal InRelease
Hit:5 http://archive.ubuntu.com/ubuntu focal InRelease
Err:6 http://ppa.launchpad.net/certbot/certbot/ubuntu focal Release
  404  Not Found [IP: 91.189.95.85 80]
Get:7 https://mega.nz/linux/MEGAsync/xUbuntu_20.04 ./ InRelease [2,441 B]
Hit:8 http://security.ubuntu.com/ubuntu focal-security InRelease
Ign:9 http://rpms.litespeedtech.com/debian focal InRelease
Hit:10 http://rpms.litespeedtech.com/debian focal Release
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/certbot/certbot/ubuntu focal 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.
Error executing command, exiting
Ferks-FK / Pterodactyl-AutoThemes

Script stop at APT-GET #6
