Local Server Website Issue Node.JS

My website (attached it), hosted on a local server, is throwing a server error when I attempt to run it with 'npm start'. There's been no recent change to the code or dependencies, so I'm unsure what's causing the issue. I'm looking for a professional who can quickly diagnose and fix this problem. If the resolution goes smoothly, I'm open to discussing a long-term collaboration for website maintenance and updates.