I am learning about powerbi. I am doing fine until I have to create the custom visuals. I did according to the instruction. However, when I run the command pbiviz start, I received the following error. 
I just started learning powerbi a week ago and I have no idea how to solve it. And I tried to apply the solutions I have found online but all of them couldn't solve my issue. I am stuck here. Can someone help me?
