Mensagem de erro na atualização

[Paulo Mourão]

Bom dia,

Utilizo o ubuntu 17.10 e sempre que tento atualizar aparece a seguinte mensagem de erro: "Falha ao baixar informações do repositório. Verifique sua conexão com a internet"

Pelo terminal aparece a mensagem abaixo:

Atingido:1 https://deb.opera.com/opera-stable stable InRelease                 
Obter:2 http://security.ubuntu.com/ubuntu artful-security InRelease [83,2 kB] 
Atingido:3 http://ppa.launchpad.net/stoq-dev/lancamentos/ubuntu artful InRelease
Ign:4 http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu artful InRelease         
Atingido:5 http://ppa.launchpad.net/webupd8team/java/ubuntu artful InRelease   
Err:6 http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu artful Release           
  404  Not Found
Atingido:7 http://br.archive.ubuntu.com/ubuntu artful InRelease               
Atingido:8 http://br.archive.ubuntu.com/ubuntu artful-updates InRelease
Atingido:9 http://br.archive.ubuntu.com/ubuntu artful-backports InRelease
Lendo listas de pacotes... Pronto                       
W: Target Packages (non-free/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target Packages (non-free/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target Packages (non-free/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target Translations (non-free/i18n/Translation-pt_BR) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target Translations (non-free/i18n/Translation-pt) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target Translations (non-free/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target DEP-11 (non-free/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target DEP-11 (non-free/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target DEP-11-icons (non-free/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
E: The repository 'http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu artful 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( manpage for repository creation and user configuration details.
W: Target Packages (non-free/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target Packages (non-free/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target Packages (non-free/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target Translations (non-free/i18n/Translation-pt_BR) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target Translations (non-free/i18n/Translation-pt) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target Translations (non-free/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target DEP-11 (non-free/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target DEP-11 (non-free/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4
W: Target DEP-11-icons (non-free/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:52 and /etc/apt/sources.list.d/opera-stable.list:4

Alguém poderia me ajudar ?

Grato.