minukube will create a virtual NIC and communicate with your system through this virtual NIC. So you can’t access Meshery in minukube through localhost. there is a command to see the IP and port that minukube maps for the service, but I forgot it, for details you can refer to step 4 of this link [minikube start | minikube /](minikube start | minikube /)
You need to port-forward from port 8080 to port 9081, or you can directly use the command like this:
mesheryctl system dashboard --port-forward
I hope this can help you!