##Your distribution, identified as "n/a", is not currently supported, please contact NodeSource at https://github.com/nodesource/distributions/issues if you think this is incorrect or would like your distribution to be considered for support
解决方法:
vim /etc/apt/sources.list.d/nodesource.list
#手动输入添加源 (想装 node14 版本的把下面 12.x 改成 14.x 就行)
deb https://deb.nodesource.com/node_12.x buster main
deb-src https://deb.nodesource.com/node_12.x buster main