You don’t need to do node index.js to start a node process on glitch, you just need to properly configure your package.json with a start script, and glitch will handle starting it.
It’s a little difficult to comment without seeing the code as your project is private, and the linked app doesn’t have a config.json settings file. But it looks like it’s trying to listen on port 9200 - we recommend you use 3000 (which is what process.env.PORT defaults to)