Boilerplate code gives Error 404 Not Found -- Can't complete challenge

The boilerplate code is not allowing for me to run the code properly. I can add Bcrypt and all of that jazz, when I go to run it, the website displays “Cannot GET /” and throws an error 404 Not Found in the headers.

My code is the boilerplate code found here: GitHub - freeCodeCamp/boilerplate-bcrypt: A boilerplate for the freeCodeCamp curriculum referenced in 'Data Protection with BCrypt'.

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.36

Challenge: Hash and Compare Passwords Asynchronously

Link to the challenge: