Node.js Heroku在尝试打开我的web应用程序时给了我一个503，但它在我的本地主机上运行良好

这些是最近使用heroku logs--tail从我的CLI中获取的日志

    2020-11-15T10:18:43.902773+00:00 heroku[web.1]: Process exited with status 1
2020-11-15T10:18:43.946803+00:00 heroku[web.1]: State changed from starting to crashed
2020-11-15T10:19:16.927207+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=damp-castle-73586.herokuapp.com request_id=f2dc9c35-875e-4a01-97ca-b468fa10b2c6 fwd="197.210.76.92" dyno= connect= service= status=503 bytes= protocol=https
2020-11-15T10:19:17.711408+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=damp-castle-73586.herokuapp.com request_id=dae1b2f6-e951-4d26-98ab-ab26a9925b76 fwd="197.210.53.175" dyno= connect= service= status=503 bytes= protocol=https

如果您有任何帮助，我们将不胜感激。 以下是我的程序文件的内容：

{
  "name": "mern_shopping_list",
  "version": "1.0.0",
  "description": "Shoppping list built with the MERN stack",
  "main": "server.js",
  "scripts": {
    "client-install": "npm install --prefix client",
    "start": "node server.js",
    "server": "nodemon server.js",
    "client": "npm start --prefix client",
    "dev": "concurrently \"npm run server\" \"npm run client\"",
    "heroku-postbuild": "NPM_CONFIG_PRODUCTION=false npm install --prefix client && npm run build --prefix client"
  },
  "author": "Pofi Abel",
  "license": "MIT",
  "dependencies": {
    "body-parser": "^1.19.0",
    "concurrently": "^5.3.0",
    "express": "^4.17.1",
    "mongoose": "^5.10.11"
  }
}

---

请提供更多日志，因为只能看到应用程序正在崩溃，此处没有显示任何其他内容。您可以共享您的程序文件吗？我希望可以提供更多日志，但这正是所有日志返回的原因。很遗憾：（@MohitGuptaI刚刚添加了程序文件，谢谢@svikramjeet