Ionic app getting freeze in the first screen in the iOS devices and iOS simulators. Only I can scroll the page. Also not able click within app in the available buttons

Ionic Native
1

my ionic app info

@ionic/cli-utils  : 1.19.2
ionic (Ionic CLI) : 3.20.0

global packages:

cordova (Cordova CLI) : 8.0.0

local packages:

@ionic/app-scripts : 3.0.0
Cordova Platforms  : ios 4.5.5
Ionic Framework    : ionic-angular 3.9.2

System:

Node  : v8.11.1
npm   : 6.1.0
OS    : macOS High Sierra
Xcode : Xcode 9.3 Build version 9E145

Environment Variables:

ANDROID_HOME : not set

Misc:

backend : pro