I just can not use some tools in Kali

I'm doing an information security course, but one of the main tools does not work, I can not learn how to clone a site like this, look …
Keep asking me to copy all the contents of the www directory to the html folder itself and, when I do, I find the same error message, is Kali having problems or something?
By the way, I'm new using Kali.enter the description of the image here