[RESOLVIDO] Erro em sudo apt-get update

[wbrunno]

$ sudo apt-get update
Hit:1 http://br.archive.ubuntu.com/ubuntu focal InRelease
Hit:2 https://brave-browser-apt-release.s3.brave.com stable InRelease         
Get:3 http://br.archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]     
Get:4 http://br.archive.ubuntu.com/ubuntu focal-backports InRelease [101 kB]   
Get:5 http://br.archive.ubuntu.com/ubuntu focal-security InRelease [114 kB]   
Ign:6 http://ppa.launchpad.net/hsoft/ppa/ubuntu focal InRelease               
Get:7 http://www.geogebra.net/linux stable InRelease [8.864 B]                 
Hit:8 http://repository.spotify.com stable InRelease                           
Err:9 http://ppa.launchpad.net/hsoft/ppa/ubuntu focal Release                 
  404  Not Found [IP: 2001:67c:1560:8008::19 80]
Reading package lists... Done
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target Packages (main/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target Translations (main/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target DEP-11 (main/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target DEP-11-icons-small (main/dep11/icons-48x48.tar) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target DEP-11-icons-hidpi (main/dep11/icons-64x64@2.tar) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
E: The repository 'http://ppa.launchpad.net/hsoft/ppa/ubuntu focal 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 (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target Packages (main/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target Translations (main/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target DEP-11 (main/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target DEP-11-icons-small (main/dep11/icons-48x48.tar) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target DEP-11-icons-hidpi (main/dep11/icons-64x64@2.tar) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3
W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list:58 and /etc/apt/sources.list.d/geogebra.list:3

Toda vez que dou o comando aparece essa mensagem sobre arquivos duplicados. Como removê-los? Já tentei instalar programas que apagam arquivos duplicados como o DupeGuru mas ele não instala pelo terminal.

[creto]

Remova esse PPA da sua sources.list

Err:9 http://ppa.launchpad.net/hsoft/ppa/ubuntu focal Release                 
  404  Not Found [IP: 2001:67c:1560:8008::19 80]

>>>> Como remover, leia aqui... <<<<

T+

[wbrunno]

Deu certo. Muito obrigado!

[creto]

Deu certo. Muito obrigado!

Fico feliz que resolveu 

T+