无法使用HWE在Ubuntu 18.04.4 LTS上安装VirtualBox来宾添加-为什么？

VirtualBox来宾工具，Ubuntu 18.04 LTS中经常出现的问题？ $ head -n2 /etc/apt/sources.list # deb cdrom:[Ubuntu 18.04.4 LTS _Bionic Beaver_ - Release amd64 (20200203.1)]/ bionic main restricted $ hwe-support-status Your Hardware Enablement Stack (HWE) is supported until ap...