dnf error - Fedora-Xfce-armhfp-30-20190312.n.0-sda

[Robert Moskowitz]

I did a dnf update successfully.  Then a 'dnf list > dnf.lst' to get the 
packages available.  Then tried to install tigervnc-server:

# dnf install tigervnc-server
Fedora Modular 30 - armhfp                      0.0  B/s |   0 B     00:00
Failed to synchronize cache for repo 'fedora-modular'
Error: Failed to synchronize cache for repo 'fedora-modular'