Help Me Diagnose Why My Local JavaScript Site Stopped Running

I’m a beginner developer and recently created a simple website using JavaScript. Yesterday I successfully ran and tested it locally — everything worked fine. But today, the site refuses to launch locally. It doesn’t show any errors, it just doesn’t run. I haven’t changed anything in the code since yesterday.

I’m looking for someone who can help me understand what went wrong. Ideally, I’d like to fix it myself, so if you can at least point me in the right direction or explain what’s happening, that would be amazing. If you end up fixing it, please explain exactly what the issue was and how you solved it — I want to learn from this.

The project is simple, entirely in JavaScript, and I can share the files with you.
My budget is up to $100 for this help.

Requirements:

• Analyze why the local site no longer runs

• Provide at least a hint or suggestion based on the code/files

• If you fix it, explain exactly what you did and why it worked

• No backend, just front-end JavaScript

Thanks in advance!

Here’s the project link:
https://www.dropbox.com/scl/fi/rtd0r4u0b7uzls6yleik3/site.zip?rlkey=vifem4772dyabxgsvekxudaf3&st=iwf6f29n&dl=0