My problem is very similar to
Gem::LoadError: can’t activate vagrant-libvirt-0.2.1, already activated vagrant-libvirt-0.0.45
and somewhat similar to Gem::LoadError: can’t activate vagrant-libvirt-0.1.2, already activated vagrant-libvirt-0.0.45
I moved my 7200HD to another computer but was unable to boot it.
I was able to attach another 5400HD and use a live USB to format that into Ubuntu 20 LTS
Using that 5400HD, I was able to rsync all (at least I think) the files/directories from the 7200HD to the 5400HD.
To double check, I tried to vagrant up using the 5400HD copy.
That returns the above error.
I had not installed vagrant/virtual box to the fresh 5400HD install so I did that but the same error returns
I tried removing as well as reinstalling as discussed by fcojgodoy but that was not successful.
Any ideas would be appreciated.