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A maioria dos repositórios e PPAs no seu sources.listnão estão mais disponíveis e estão gerando erros. Eu recomendaria restaurar os repositórios padrão.
Primeiro, restaure os repositórios focais padrão usando estes comandos:
mkdir ~/solution cd ~/solution/
cat << EOF > ~/solution/sources.list deb http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
deb http://archive.canonical.com/ubuntu focal partner deb-src http://archive.canonical.com/ubuntu focal partner EOF
sudo rm /etc/apt/sources.list sudo cp ~/solution/sources.list /etc/apt/sources.list Remova todos os PPAs do seu sistema:
sudo mv /etc/apt/sources.list.d/* ~/solution Atualize os repositórios:
sudo apt update
Seguindo esse passo a passo resolveu meu problema
