Hi,
I’ve just tried an install with server & “Development Tools” on a VM. All went fine. Were any other groups affected?
/var/log/anaconda
Contains logs from the install, it may be worth a look to see what happened. I would start with packaging.log
Alternatively you try removing the “Development Tools”
dnf group remove "Development Tools"
dnf group install "Development Tools"
If the packages are still unavailable the output of the above commands, should give more insight to the issue.
Regards Tom.