другая проблема с обновлением [дубликат]

Я только что установил сервер Ubuntu, но, похоже, не могу обновить

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.6 LTS
Release:    16.04
Codename:   xenial

много пробовал, но ничего не работает

sudo touch /etc/apt/sources.list
sudo mv /etc/apt/sources.list ~/
sudo apt-get install -f
sudo rm -rf /var/lib/apt/lists/* 
sudo gedit /etc/apt/sources.list
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
sudo apt-get clean && sudo apt-get update

ufw enable
ufw allow out 53
ufw allow out 443
ufw allow out 80
sudo apt-get clean
cd /var/lib/apt
sudo mv lists lists.old
sudo mkdir -p lists/partial
sudo apt-get clean
sudo apt-get update 
/etc/resolv.conf -->> added CloudFire and Google DNS although I can ping google with no packet lost

вот самая последняя ошибка:

sudo apt-get clean && sudo apt-get update
Ign:1 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial InRelease
Ign:2 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial Release
Ign:3 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main amd64 Packages
Ign:4 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main i386 Packages
Ign:5 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main all Packages
Ign:6 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main Translation-en_IE
Ign:7 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main Translation-en
Ign:3 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main amd64 Packages
Ign:4 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main i386 Packages
Ign:5 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main all Packages
Ign:6 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main Translation-en_IE
Ign:7 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main Translation-en
Ign:3 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main amd64 Packages
Ign:4 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main i386 Packages
Ign:5 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main all Packages
Ign:6 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main Translation-en_IE
Ign:7 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main Translation-en
Ign:3 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main amd64 Packages
Ign:4 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main i386 Packages
Ign:5 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main all Packages
Ign:6 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main Translation-en_IE
Ign:7 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main Translation-en
Ign:3 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main amd64 Packages
Ign:4 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main i386 Packages
Ign:5 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main all Packages
Ign:6 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main Translation-en_IE
Ign:7 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main Translation-en
Err:3 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main amd64 Packages
  404  Not Found [IP: 91.189.95.83 80]
Ign:4 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main i386 Packages
Ign:5 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main all Packages
Ign:6 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main Translation-en_IE
Ign:7 http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial/main Translation-en
Reading package lists... Done
W: The repository 'http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://ppa.launchpad.net/patrickdk/general-lucid/ubuntu/dists/xenial/main/binary-amd64/Packages  404  Not Found [IP: 91.189.95.83 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.