无法从Ubuntu Mate 19.10升级到20.04

我无法从19.10升级到Ubuntu mate 20.04时遇到以下错误:

"Atingido:1 http://pt.archive.ubuntu.com/ubuntu bionic-updates InRelease Atingido:2 http://archive.ubuntu.com/ubuntu eoan InRelease
Atingido:3 http://archive.ubuntu.com/ubuntu eoan-updates InRelease
Atingido:4 http://archive.ubuntu.com/ubuntu eoan-backports InRelease
Atingido:5 http://security.ubuntu.com/ubuntu bionic-security InRelease
Atingido:6 http://archive.ubuntu.com/ubuntu eoan-security InRelease
Atingido:7 http://archive.canonical.com/ubuntu eoan InRelease A ler as listas de pacotes... Pronto A construir árvore de dependências
A ler a informação de estado... Pronto 1 package can be upgraded. Run 'apt list --upgradable' to see it. gsl@GSLHP-Pavilion-g6:~$ apt list --upgradable Listing... Pronto brltty/eoan 5.6-11ubuntu2 amd64 [upgradable from: 5.5-4ubuntu2.0.1] N: There is 1 additional version. Please use the '-a' switch to see it gsl@GSLHP-Pavilion-g6:~$ "

有人可以帮我吗

谢谢 GSL

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