FCM插件丢失的依赖

我使用的离子2.为了充分利用谷歌推送通知服务的，我需要安装this：FCM插件丢失的依赖

ionic plugin add cordova-plugin-fcm

但是，这样做后，我得到这个错误时我尝试构建应用程序：

Error: cmd: Command failed with exit code 1 Error output: 
FAILURE: Build failed with an exception. 

* What went wrong: 
Execution failed for task ':processDebugGoogleServices'. 
> File google-services.json is missing. The Google Services Plugin cannot function without it. 
    Searched Location: 
    E:\Development\IDE\ionic-apps\theWhoZoo\platforms\android\src\debug\google-services.json 
    E:\Development\IDE\ionic-apps\theWhoZoo\platforms\android\google-services.json 

* Try: 
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

所以似乎缺少依赖google-services.json我想。我需要安装吗？怎么样？

如果有人可以协助，我将不胜感激。