Reading package lists... Done
W: The repository 'http://security.ubuntu.com/ubuntu loki-security 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.
W: The repository 'http://gb.archive.ubuntu.com/ubuntu loki 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.
W: The repository 'http://gb.archive.ubuntu.com/ubuntu loki-updates 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.
W: The repository 'http://packages.elementary.io/appcenter loki 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.
W: The repository 'http://gb.archive.ubuntu.com/ubuntu loki-backports 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.
W: The repository 'http://http.kali.org/kali loki 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.
W: The repository 'http://ppa.launchpad.net/elementary-os/stable/ubuntu loki 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.
W: The repository 'http://ppa.launchpad.net/mpstark/elementary-tweaks-daily/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.
W: The repository 'http://ppa.launchpad.net/elementary-os/os-patches/ubuntu loki 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.
W: The repository 'https://s3-us-west-2.amazonaws.com/brave-apt loki 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://security.ubuntu.com/ubuntu/dists/loki-security/main/binary-amd64/Packages  404  Not Found [IP: 91.189.88.149 80]
E: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/loki/main/binary-amd64/Packages  404  Not Found [IP: 91.189.88.149 80]
E: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/loki-updates/main/binary-amd64/Packages  404  Not Found [IP: 91.189.88.149 80]
E: Failed to fetch http://packages.elementary.io/appcenter/dists/loki/main/binary-amd64/Packages  404  Not Found [IP: 104.28.5.44 80]
E: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/loki-backports/main/binary-amd64/Packages  404  Not Found [IP: 91.189.88.149 80]
E: Failed to fetch http://http.kali.org/kali/dists/loki/main/binary-amd64/Packages  404  Not Found
E: Failed to fetch http://ppa.launchpad.net/elementary-os/stable/ubuntu/dists/loki/main/source/Sources  404  Not Found
E: Failed to fetch http://ppa.launchpad.net/mpstark/elementary-tweaks-daily/ubuntu/dists/xenial/main/binary-amd64/Packages  404  Not Found
E: Failed to fetch http://ppa.launchpad.net/elementary-os/os-patches/ubuntu/dists/loki/main/source/Sources  404  Not Found
E: Failed to fetch https://s3-us-west-2.amazonaws.com/brave-apt/dists/loki/main/binary-amd64/Packages  403  Forbidden
E: Some index files failed to download. They have been ignored, or old ones used instead.