Tex live 已经在我的 PC 上安装了整整 3 个小时，在这段时间之后我收到以下错误消息：
*** PLEASE READ THIS WARNING ***********************************
The following (inessential) packages failed to install properly:
media9
You can fix this by running this command:
tlmgr update --all --reinstall-forcibly-removed
to complete the installation.
However, if the problem was a failure to download (by far the
most common cause), check that you can connect to the chosen mirror
in a browser; you may need to specify a mirror explicitly.
******************************************************************
我尝试运行它建议的命令行，但我的电脑仍然无法安装它所说的软件包。有人知道还有什么办法可以解决这个问题吗？或者即使没有这个软件包，关闭安装是否安全，程序仍然可以运行？