How to connect to a remote minikube

I created a minikube and install kubernetes on a larger Ubuntu computer.

I went to Setting > Build, Execution, Deployment >  and created a new docker using tcp socket.  I learned from reading about this problem and used for "Engine API URL": https://192.168.88.100:2376

The Certificates Folder: /home/username/.minikube/certs

It works when I use this minikube from the Ubuntu Computer.

I then copied everything in  the Certificates folder to another Mac Computer and tried to connect.

I get the error "no port configured for null".  On the ubuntu computer, I open

Could anyone help with the setting up of a network minikube

Thanks