Node.js Site Troubleshooting

My site built on Node.js isn't starting with 'npm start'. It was working perfectly before without any changes to the code or environment. Despite trying to initiate it several times, I'm not receiving any error messages.

Ideal Skills:
- Proficient in Node.js
- Experience with debugging Node.js applications
- Familiar with npm

Your task will be to diagnose the issue and get my site up and running again.