ionic 4.0.0 icons for ios not working

使用 angular.json 中的资源配置和 package.json 中的依赖版本，通过 ionic serve -l 重现缺失的图标请求。将引用的 ionicons SVG 路径与配置的输入目录所提供的文件进行比较。当 ios-book.svg、ios-cube.svg、ios-cog.svg 和 ios-log-out.svg 请求不再返回 404 时，即表示完成。

Description:

Hi,

i upgrate today my ionic libary from 4.0.0-beta19 to 4.0.0
and after i run ionic serve -l the icons are not working and show me:

Failed to load resource: the server responded with a status of 404 (Not Found)
:8100/svg/ios-book.svg:1 Failed to load resource: the server responded with a status of 404 (Not Found)
:8100/svg/ios-cube.svg:1 Failed to load resource: the server responded with a status of 404 (Not Found)
:8100/svg/ios-cog.svg:1 Failed to load resource: the server responded with a status of 404 (Not Found)
VM35:1 GET http://localhost:8100/svg/ios-log-out.svg 404 (Not Found)

My angular.json:

            "assets": [
              {
                "glob": "**/*",
                "input": "src/assets",
                "output": "assets"
              },
              {
                "glob": "**/*.svg",
                "input": "node_modules/ionicons/dist/ionicons/svg",
                "output": "./svg"
              }
            ],

My Package.json:

{
  "name": "app",
  "version": "1.0.8",
  "author": "Ionic Framework",
  "homepage": "http://ionicframework.com/",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "~7.2.2",
    "@angular/common": "~7.2.2",
    "@angular/core": "~7.2.2",
    "@angular/forms": "~7.2.2",
    "@angular/http": "~7.2.2",
    "@angular/platform-browser": "~7.2.2",
    "@angular/platform-browser-dynamic": "~7.2.2",
    "@angular/router": "~7.2.2",
    "@ionic-native/app-version": "5.0.0",
    "@ionic-native/core": "5.0.0",
    "@ionic-native/local-notifications": "5.0.0",
    "@ionic-native/network": "5.0.0",
    "@ionic-native/splash-screen": "5.0.0",
    "@ionic-native/status-bar": "5.0.0",
    "@ionic/angular": "~4.0.0",
    "@ionic/storage": "2.2.0",
    "@types/axios": "^0.14.0",
    "axios": "^0.18.0",
    "cordova-android": "^7.1.4",
    "cordova-ios": "^4.5.5",
    "cordova-plugin-app-version": "0.1.9",
    "cordova-plugin-badge": "0.8.8",
    "cordova-plugin-device": "^2.0.2",
    "cordova-plugin-ionic-keyboard": "^2.1.3",
    "cordova-plugin-ionic-webview": "^3.1.1",
    "cordova-plugin-local-notification": "0.9.0-beta.2",
    "cordova-plugin-network-information": "2.0.1",
    "cordova-plugin-splashscreen": "^5.0.2",
    "cordova-plugin-statusbar": "^2.4.2",
    "cordova-plugin-whitelist": "^1.3.3",
    "core-js": "^2.6.3",
    "ngx-pagination": "^3.2.1",
    "rxjs": "~6.3.3",
    "videogular2": "^6.4.0",
    "zone.js": "~0.8.29"
  },
  "devDependencies": {
    "@angular-devkit/architect": "~0.12.3",
    "@angular-devkit/build-angular": "^0.12.3",
    "@angular-devkit/core": "~7.2.2",
    "@angular-devkit/schematics": "~7.2.2",
    "@angular/cli": "~7.2.2",
    "@angular/compiler": "~7.2.2",
    "@angular/compiler-cli": "~7.2.2",
    "@angular/language-service": "~7.2.2",
    "@ionic/angular-toolkit": "~1.2.2",
    "@ionic/lab": "~1.0.19",
    "@types/core-js": "^2.5.0",
    "@types/jasmine": "~3.3.7",
    "@types/jasminewd2": "~2.0.6",
    "@types/node": "~10.12.18",
    "codelyzer": "~4.5.0",
    "jasmine-core": "~3.3.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.4",
    "karma-jasmine": "~2.0.1",
    "karma-jasmine-html-reporter": "^1.4.0",
    "protractor": "~5.4.2",
    "ts-node": "~7.0.1",
    "tslint": "~5.12.1",
    "typescript": "~3.2.4"
  },
  "description": "An Ionic project",
  "cordova": {
    "plugins": {
      "cordova-plugin-whitelist": {},
      "cordova-plugin-statusbar": {},
      "cordova-plugin-device": {},
      "cordova-plugin-splashscreen": {},
      "cordova-plugin-ionic-webview": {},
      "cordova-plugin-ionic-keyboard": {},
      "cordova-plugin-streaming-media": {},
      "cordova-plugin-network-information": {},
      "cordova-plugin-local-notification": {},
      "cordova-plugin-app-version": {}
    },
    "platforms": [
      "android",
      "ios"
    ]
  }
}

My ionic info:

Ionic:

   ionic (Ionic CLI)             : 4.3.1 (/usr/local/lib/node_modules/ionic)
   Ionic Framework               : @ionic/angular 4.0.0
   @angular-devkit/build-angular : 0.12.3
   @angular-devkit/schematics    : 7.2.3
   @angular/cli                  : 7.2.3
   @ionic/angular-toolkit        : 1.2.2

Cordova:

   cordova (Cordova CLI) : 8.1.2 (cordova-lib@8.1.1)
   Cordova Platforms     : android 7.1.4, ios 4.5.5
   Cordova Plugins       : cordova-plugin-ionic 5.2.7, cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 2.2.5, (and 11 other plugins)

Thanks