i copied the directory in a temp directory and then moved it to /var/www/my_webapp/www with mv (using root) as the app says to do, but when i refreshed the page it still loads on the my_webapp page. 
what im trying to do specifically is to put up my hugo website and, as i think it is being suggested in this thread, the only thing i need to do is to create the website and then upload it in the my_webapp directory.
or ma i wrong?