错误：在www / build / fonts /中缺少ionicons.woff

Question

当我从一个新制作的标签启动应用程序运行离子服务时，我在浏览器中收到以下错误。

Failed to load resource: the server responded with a status of 404 (Not Found)
http://localhost:8100/build/fonts/ionicons.woff?v=3.0.0-alpha.3
ionicons.woff is referenced in www/build/css/app.ios.css.

这是我的离子信息：

$ ionic info
Your system information:
Cordova CLI: 6.3.1
Gulp version: CLI version 3.9.1
Gulp local:
Ionic Framework Version: 2.0.0-rc.0
Ionic CLI Version: 2.1.0
Ionic App Lib Version: 2.1.0-beta.1
OS
Node Version: v6.7.0

错误照片