Camera is not working in ios but working in android

Hi,
Camera is not working in ios app but it is working in android.
Ionic:

ionic (Ionic CLI) : 4.6.0 (/usr/local/lib/node_modules/ionic)
Ionic Framework : ionic-angular 3.9.4
@ionic/app-scripts : 3.2.4

Cordova:

cordova (Cordova CLI) : 8.1.2 (cordova-lib@8.1.1)
Cordova Platforms : android 7.1.4, browser 5.0.4, ios 4.5.5
Cordova Plugins : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 4.1.1, (and 12 other plugins)

System:

ios-deploy : 1.9.4
NodeJS : v10.15.0 (/usr/local/bin/node)
npm : 3.10.10
OS : macOS High Sierra
Xcode : Xcode 10.1 Build version 10B61