Обновление из такого репозитория не может быть сделано надежно и поэтому отключено по умолчанию, когда выполнение sudo склонный - получает обновление

Я работаю sudo apt-get update на моей человечности 18.10

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.10
Release:    18.10
Codename:   cosmic

Затем получение ниже ответа:

Hit:1 http://linux.teamviewer.com/deb stable InRelease
Ign:2 http://dl.google.com/linux/chrome/deb stable InRelease                                                                                                           
Hit:3 http://ppa.launchpad.net/linrunner/tlp/ubuntu cosmic InRelease                                                                                                   
Hit:4 http://archive.canonical.com/ubuntu cosmic InRelease                                                                                                             
Ign:5 http://us.archive.ubuntu.com/ubuntu cosmic InRelease                                                                                                             
Hit:6 http://ppa.launchpad.net/ondrej/php/ubuntu cosmic InRelease                                                                                                      
Ign:7 http://us.archive.ubuntu.com/ubuntu cosmic-updates InRelease                                                                                                     
Hit:8 https://dl.winehq.org/wine-builds/ubuntu bionic InRelease                                                                                                        
Hit:9 https://download.sublimetext.com apt/stable/ InRelease                                                                                                           
Hit:10 http://ppa.launchpad.net/videolan/master-daily/ubuntu cosmic InRelease                                                                                          
Hit:11 http://dl.google.com/linux/chrome/deb stable Release                                                                                                      
Ign:12 http://us.archive.ubuntu.com/ubuntu cosmic-backports InRelease                                                                      
Get:13 https://dl.yarnpkg.com/debian stable InRelease [17.1 kB]                                                      
Hit:15 https://repo.skype.com/deb stable InRelease                                                            
Ign:16 http://us.archive.ubuntu.com/ubuntu cosmic-security InRelease      
Err:13 https://dl.yarnpkg.com/debian stable InRelease
  The following signatures were invalid: EXPKEYSIG 23E7166788B63E1E Yarn Packaging <yarn@dan.cx>
Err:17 http://us.archive.ubuntu.com/ubuntu cosmic Release
  404  Not Found [IP: 91.189.91.23 80]
Err:18 http://us.archive.ubuntu.com/ubuntu cosmic-updates Release
  404  Not Found [IP: 91.189.91.23 80]
Err:19 http://us.archive.ubuntu.com/ubuntu cosmic-backports Release
  404  Not Found [IP: 91.189.91.23 80]
Err:20 http://us.archive.ubuntu.com/ubuntu cosmic-security Release
  404  Not Found [IP: 91.189.91.23 80]
Reading package lists... Done
W: GPG error: https://dl.yarnpkg.com/debian stable InRelease: The following signatures were invalid: EXPKEYSIG 23E7166788B63E1E Yarn Packaging <yarn@dan.cx>
E: The repository 'https://dl.yarnpkg.com/debian stable InRelease' is not signed.
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.
E: The repository 'http://us.archive.ubuntu.com/ubuntu cosmic 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.
E: The repository 'http://us.archive.ubuntu.com/ubuntu cosmic-updates 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.
E: The repository 'http://us.archive.ubuntu.com/ubuntu cosmic-backports 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.
E: The repository 'http://us.archive.ubuntu.com/ubuntu cosmic-security 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.

Мой sources.list

dev@dev-40-G2:~$ cat /etc/apt/sources.list
# deb cdrom:[Ubuntu 18.10 _Cosmic Cuttlefish_ - Release amd64 (20181017.3)]/ cosmic main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://us.archive.ubuntu.com/ubuntu/ cosmic main restricted
# deb-src http://ke.archive.ubuntu.com/ubuntu/ cosmic main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://us.archive.ubuntu.com/ubuntu/ cosmic-updates main restricted
# deb-src http://ke.archive.ubuntu.com/ubuntu/ cosmic-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://us.archive.ubuntu.com/ubuntu/ cosmic universe
# deb-src http://ke.archive.ubuntu.com/ubuntu/ cosmic universe
deb http://us.archive.ubuntu.com/ubuntu/ cosmic-updates universe
# deb-src http://ke.archive.ubuntu.com/ubuntu/ cosmic-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://us.archive.ubuntu.com/ubuntu/ cosmic multiverse
# deb-src http://ke.archive.ubuntu.com/ubuntu/ cosmic multiverse
deb http://us.archive.ubuntu.com/ubuntu/ cosmic-updates multiverse
# deb-src http://ke.archive.ubuntu.com/ubuntu/ cosmic-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://us.archive.ubuntu.com/ubuntu/ cosmic-backports main restricted universe multiverse
# deb-src http://ke.archive.ubuntu.com/ubuntu/ cosmic-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu cosmic partner
# deb-src http://archive.canonical.com/ubuntu cosmic partner

deb http://us.archive.ubuntu.com/ubuntu/ cosmic-security main restricted
# deb-src http://security.ubuntu.com/ubuntu cosmic-security main restricted
deb http://us.archive.ubuntu.com/ubuntu/ cosmic-security universe
# deb-src http://security.ubuntu.com/ubuntu cosmic-security universe
deb http://us.archive.ubuntu.com/ubuntu/ cosmic-security multiverse
# deb-src http://security.ubuntu.com/ubuntu cosmic-security multiverse

# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.
# deb https://download.sublimetext.com/ apt/stable/
# deb-src https://download.sublimetext.com/ apt/stable/
deb https://dl.winehq.org/wine-builds/ubuntu/ bionic main
# deb-src https://dl.winehq.org/wine-builds/ubuntu/ bionic main

Я являюсь новым на Ubuntu - кто-либо помогает?Спасибо.