Cannot start docker on mac - Fatal Error - The operation couldn't be completed. (Docker.VmnetdError error 1.)

That issue came because of the, image file directly opening. you can drag the docker image and drop in to the Applications and after that open the Docker.app from the Applications folder. Solves the issue

My Docker.app was already in the Applications folder but I still got the error The operation couldn't be completed. (Docker.VmnetdError error 1.) when trying to open it. What solved it for me was resetting docker by clicking the Reset Docker to factory defaults.

I had this issue for weeks, upgrading to Version 3.0.0 resolved this issue. I downloaded it and it opens straight away no errors.

Another error i was seeing