Paypal Integration with Ionic - Initialization Error, plugin not installed

I am Integrating Paypal with Ionic 3 App. I have followed official documentation of Ionic. But I am getting Following error while I try to run the app:
" Initialization Error, plugin not installed".

Any Suggestions?

What documentation are you referring to?
What is your ionic info output?

I am talking about the following documentation:

Ionic Info Output:

@ionic/cli-utils : 1.9.2
ionic (Ionic CLI) : 3.9.2

global packages:

Cordova CLI : 7.0.1

local packages:

@ionic/app-scripts : 2.1.4
Cordova Platforms  : android 6.2.3
Ionic Framework    : ionic-angular 3.6.0

System:

Android SDK Tools : 25.2.5
Node              : v6.10.3
npm               : 3.10.10
OS                : Windows 7

So what are the exact steps you did?
How are you testing your app?

I have installed the Cordova and Ionic Native plugins and added it to app module.
Then I created App on Paypal and copy sandbox id and added in my code.
I am testing the app using the ionic view.
App Id: 682c568d

Paypal is not one of the supported plugins of Ionic View:

https://docs.ionic.io/tools/view/#supported-plugins

You will have to build the app yourself.

Thanks. On device, it is running properly.

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