richard@Richard-Notebook-3:~$ sudo apt-get update
[sudo] password for richard:
Ign:1 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:2 http://dl.google.com/linux/chrome/deb stable Release
Hit:3 http://us.archive.ubuntu.com/ubuntu xenial InRelease
Hit:5 http://archive.canonical.com/ubuntu xenial InRelease
Hit:6 http://us.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:7 http://ppa.launchpad.net/costales/folder-color/ubuntu xenial InRelease
Hit:8 http://security.ubuntu.com/ubuntu xenial-security InRelease
Hit:9 http://us.archive.ubuntu.com/ubuntu xenial-backports InRelease
Hit:10 http://ppa.launchpad.net/geary-team/releases/ubuntu xenial InRelease
Hit:11 http://ppa.launchpad.net/gnome-terminator/nightly/ubuntu xenial InRelease
Hit:12 http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu xenial InRelease
Hit:13 http://ppa.launchpad.net/noobslab/icons2/ubuntu xenial InRelease
Hit:14 https://deb.opera.com/opera-beta stable InRelease
Hit:15 http://ppa.launchpad.net/noobslab/themes/ubuntu xenial InRelease
Hit:16 http://ppa.launchpad.net/pithos/ppa/ubuntu xenial InRelease
Hit:17 http://ppa.launchpad.net/ravefinity-project/ppa/ubuntu xenial InRelease
Hit:18 http://ppa.launchpad.net/snwh/pulp/ubuntu xenial InRelease
Hit:19 http://ppa.launchpad.net/transmissionbt/ppa/ubuntu xenial InRelease
Ign:20 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial InRelease
Hit:21 http://ppa.launchpad.net/webupd8team/atom/ubuntu xenial InRelease
Ign:22 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial Release
Ign:23 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 Packages.diff/Index
Ign:24 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main i386 Packages.diff/Index
Ign:25 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main all Packages
Ign:26 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en_US
Ign:27 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en.diff/Index
Ign:28 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:29 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main DEP-11 64x64 Icons
Ign:30 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 Packages
Ign:31 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main i386 Packages
Ign:25 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main all Packages
Ign:26 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en_US
Ign:32 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en
Ign:28 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:29 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main DEP-11 64x64 Icons
Ign:30 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 Packages
Ign:31 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main i386 Packages
Ign:25 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main all Packages
Ign:26 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en_US
Ign:32 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en
Ign:28 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:29 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main DEP-11 64x64 Icons
Ign:30 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 Packages
Ign:31 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main i386 Packages
Ign:25 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main all Packages
Ign:26 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en_US
Ign:32 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en
Ign:28 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:29 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main DEP-11 64x64 Icons
Ign:30 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 Packages
Ign:31 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main i386 Packages
Ign:25 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main all Packages
Ign:26 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en_US
Ign:32 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en
Ign:28 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:29 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main DEP-11 64x64 Icons
Ign:30 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 Packages
Ign:31 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main i386 Packages
Ign:25 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main all Packages
Ign:26 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en_US
Ign:32 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en
Ign:28 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:29 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main DEP-11 64x64 Icons
Err:30 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main amd64 Packages
  404  Not Found
Ign:31 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main i386 Packages
Ign:32 http://ppa.launchpad.net/varlesh-l/papirus-pack/ubuntu xenial/main Translation-en
Reading package lists... Done
W: The repository 'http://ppa.launchpad.net/varlesh-l/papirus-pack/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/varlesh-l/papirus-pack/ubuntu/dists/xenial/main/binary-amd64/Packages  404  Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.