Okay so I recently started a Udemy course. I got a pre-coded HTML file, when I run it creates a launch.json file. Once the JSON file comes in, it won't run anymore and displays the error in the title. In the JSON file there's a port that's 8080 if that helps at all. After a lot of tries to fix this, somehow I created a JSON file without the "port" but with a "file" that navigates to the HTML file that works just fine.