This question concerns running minikube, a Kubernetes VM based on VirtualBox. The OP is experiencing the error as minikube can't be run on a nested VM (Windows, running Ubuntu on Vbox, runnin minikube). This is something that may be developed in future as described here.
It feels like I should maybe VTC as bug report/feature request, but also that the correct answer is "You can't do that yet", which may be useful for other users?
Should I vote to close or answer?