亲测有效 debian出现does not have a Release file. N: Updating from such a repository can‘t be done securely
当安装完Debian系统，要安装软件时候，出现如下报错信息：The repository 'cdrom://[Debian GNU/Linux 10.6.0 _Buster_ - Official amd64 DLBD Binary-1 20200926-10:17] buster Release' does not have a Release file.N: Updating from such a repository can't be done securely, and is ther
