Node.js Front-End Rendering Troubleshooting

I'm facing some critical rendering issues on my front-end built with Node.js. The page fails to load on its initial boot, and in some instances, an overlay freezes the screen.

Ideal candidates for this project would be seasoned front-end developers with:
- Proficiency in Node.js
- Strong debugging skills
- Experience with troubleshooting rendering issues

Please help me resolve these issues promptly so we can get back on track.