Heroku 部署 angular 应用程序,构建成功但应用程序错误?

Heroku deploy angular application, build success but Application error?

应用程序错误

2021-10-10T05:13:52.496118+00:00 heroku[路由器]: at=error code=H10 desc="App crashed" method=GET path="/" host=dashboard-agri.herokuapp.com request_id=03476fb8-2620-4c0a-9b5f-9588550b653f fwd="103.70.199.92" dyno=connect=service=status=503 bytes=protocol=https

1.removed the package-lock.json
2. inside package.json change npm start to node server.js
 ie: {
      "npm start" : "node server.js"
        }

在更改之前更改版本号它的工作