解决报错：gpg: keyserver receive failed: No dirmngr

今天在使用add-apt-repository时报错如下：

gpg: keybox '/tmp/tmpnh5y5w9a/pubring.gpg' created
gpg: failed to start the dirmngr '/usr/bin/dirmngr': No such file or directory
gpg: connecting dirmngr at '/run/user/0/gnupg/d.rkeyjbdrrh3u6cjumf59ra5t/S.dirmngr' failed: No such file or directory
gpg: keyserver receive failed: No dirmngr

这个报错的原因是Linux上没有安装gpg:

apt install dirmngr

报错解决