While using virt-manager and connected to a Qemu/KVM Hypervisor, I cloned a virtual machine of an Ubuntu server installation, version 16.0.4 if it matters. When I try to boot the cloned virtual machine, I get the message:
Booting from Hard Disk... error: File '/boot/grub/i386-pc/normal.mod' not found. Entering rescue mode... grub rescue>
The original virtual machine boots fine but the clone does not. Aside from a different MAC address on the network card, the clone should be an exact duplicate.
What is causing this error?
More importantly, how can I prevent it from happening, or fix the clone when it does?