I'm currently running Mint 21 XFCE Edition, and while going through my updates list, I found both a signed and unsigned GRUB2 package. Being that I'm not familiar with unsigned packages, I completed a quick web search and found a thread on the Mint forums where someone was asking the same...
[chandu@centos-8 ~]$ sudo yum install --downloadonly --downloaddir=/home/chandu/dir1 httpd
Config error: Parsing file "/etc/dnf/dnf.conf" failed: Parsing file '/etc/dnf/dnf.conf' failed: IniParser: Missing '=' at line 7
I am getting this error while trying to download only apache web server...