Unmet peer dependency error

Below is my results of ionic info

**If i add ngx to any package i am getting **
Object is not a function error

Ionic:

ionic (Ionic CLI) : 4.5.0 (/usr/local/lib/node_modules/ionic)
Ionic Framework : ionic-angular 3.9.2
@ionic/app-scripts : 3.2.1

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-keyboard 2.1.3, cordova-plugin-ionic-webview 2.3.1, (and 7 other plugins)

System:

Android SDK Tools : 26.1.1 (/home/manoj/Android/Sdk)
NodeJS : v8.10.0 (/usr/bin/node)
npm : 3.5.2
OS : Linux 4.15