I created simple node.js application (source code from here https://azure.microsoft.com/en-us/blog/visual-studio-code-and-azure-app-service-a-perfect-fit/)
var h
I had the same question and took me couple of hours to figure it out. What I basically did was that I deleted the folder after ${workspaceFolder}
The format was ${workspaceFolder}/xxxx\\folder\\subfolder\\subfolder
so by deleting what's after the "workspaceFolder" and starting my path from the double backward slash, it did fix it for me.