npm install --save-dev @angular/cli@latest
ng update @angular/cli
ng update @angular/core
ng update @angular/material
ng update rxjs

但是当运行ng服务时,错误会不断出现,如下所示

Local workspace file (‘angular.json’) could not be found

我被告知.angular-cli.json被一个新的替换：angular.json,但架构不再是旧版本,

这是我当前的angular-cli.json,我怎么能改成angular.json

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json","project": {
    "name": "ngx-admin-demo"
  },"apps": [
    {
      "root": "src","outDir": "dist","assets": [
        "assets","favicon.ico","favicon.png",{
          "glob": "**/*","input": "../node_modules/leaflet/dist/images","output": "./assets/img/markers"
        }
      ],"index": "index.html","main": "main.ts","polyfills": "polyfills.ts","test": "test.ts","tsconfig": "tsconfig.app.json","testTsconfig": "tsconfig.spec.json","styles": [
        "../node_modules/bootstrap/dist/css/bootstrap.css","./app/@theme/styles/styles.scss","../node_modules/primeng/resources/themes/omega/theme.css","../node_modules/primeng/resources/primeng.min.css","styles.scss"
      ],"scripts": [


        "../node_modules/pace-js/pace.min.js","../node_modules/echarts/dist/echarts.min.js","../node_modules/chart.js/dist/Chart.min.js","../src/assets/paho-mqtt.js"
      ],"environmentSource": "environments/environment.ts","environments": {
        "dev": "environments/environment.ts","prod": "environments/environment.prod.ts"
      }
    }
  ],"e2e": {
    "protractor": {
      "config": "./protractor.conf.js"
    }
  },"lint": [
    {
      "project": "src/tsconfig.app.json"
    },{
      "project": "src/tsconfig.spec.json"
    },{
      "project": "e2e/tsconfig.e2e.json"
    }
  ],"test": {
    "karma": {
      "config": "./karma.conf.js"
    }
  },"defaults": {
    "styleExt": "scss","component": {}
  }
}