Getting problem with deploying node js application !

In above link you can check my index,js file 

{
  "name": "fact_new_backend",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "node index.js"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "express": "^4.18.1",
    "mongoose": "^6.5.4"
  }
}