错误提示如下:

/usr/lib/apt/methods/http: error while loading shared libraries: libnettle.so.8: cannot open shared object file: No such file or directory

/usr/lib/apt/methods/http: error while loading shared libraries: libnettle.so.8: cannot open shared object file: No such file or directory

/usr/lib/apt/methods/http: error while loading shared libraries: libnettle.so.8: cannot open shared object file: No such file or directory

正在读取软件包列表... 完成

E: Method http has died unexpectedly!

E: 子进程 http 返回了一个错误号 (127)

E: 获取软件包的渠道 /usr/lib/apt/methods/http 所需的驱动程序没有正常启动

E: Method http has died unexpectedly!

E: 子进程 http 返回了一个错误号 (127)

E: 获取软件包的渠道 /usr/lib/apt/methods/http 所需的驱动程序没有正常启动

E: Method http has died unexpectedly!

E: 子进程 http 返回了一个错误号 (127)

E: 获取软件包的渠道 /usr/lib/apt/methods/http 所需的驱动程序没有正常启动

E: 无法下载 http://us.archive.ubuntu.com/ubuntu/dists/bionic/InRelease 

E: 无法下载 http://us.archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease 

E: 无法下载 http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease 

E: 部分索引文件下载失败。如果忽略它们，那将转而使用旧的索引文件。

最终的解决方案:
先去修改apt源, 我采用的源的地址:

https://gist.github.com/h0bbel/4b28ede18d65c3527b11b12fa36aa8d1

解决方案:

sudo apt-get --fix-broken install