moon's ago I read about / upgraded with one of the following commands:
sudo dnf system-upgrade download --releasever=30 --setopt=module_platform_id=platform:f30
--allowerasing
OR
sudo dnf system-upgrade download --refresh --releasever=30
--setopt='module_platform_id=platform:f30' --allowerasing
I don't remember which one and I don't know if it will help here ...