@STEVEN_LINDNER I think maybe someone has answered this question here.
Also, I am not sure about liveServer. I have used it extensively before. You should be able to open your index.html in the editor and run live server to launch your download. From which area have you downloaded your code? From here?
This is how mine looks when downloaded. All I do is make sure that the index.html file is open in the editor and then hit go live!
Can you send a screen shot of the error so everyone can have a look?