Ipad 9.3.5

#1

I am trying to build app to iPad 9.3.5 but Xcode throws this error

**-[WKWebViewConfiguration setMediaTypesRequiringUserActionForPlayback:]: unrecognized selector sent to instance 0x14d4a1a0**

**2019-03-11 10:43:30.864 MeZooBLE[505:73527] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[WKWebViewConfiguration setMediaTypesRequiringUserActionForPlayback:]: unrecognized selector sent to instance 0x14d4a1a0'**

***** First throw call stack:**

**(0x225cf91b 0x21d6ae17 0x225d52b5 0x225d2ee1 0x224fe238 0x8c56d 0x8cd4f 0x9b421 0x9ab33 0x9afd1 0x98671 0x79bff 0x26b4ad8b 0x26b4a971 0x26b51639 0x26b4eb3d 0x26bc3a5d 0x9cccd 0x799d5 0x26bbf785 0x26de72d1 0x26deb285 0x26dff83d 0x26de87b3 0x23c72c07 0x23c72ab9 0x23c72db9 0x22591dff 0x225919ed 0x2258fd5b 0x224df229 0x224df015 0x26bb8c3d 0x26bb3189 0x798d3 0x22187873)**

Ionic Info
Ionic:

   ionic (Ionic CLI)             : 4.11.0 (/usr/local/lib/node_modules/ionic)
   Ionic Framework               : @ionic/angular 4.1.1
   @angular-devkit/build-angular : 0.13.5
   @angular-devkit/schematics    : 7.2.4
   @angular/cli                  : 7.3.5
   @ionic/angular-toolkit        : 1.4.0

Cordova:

   cordova (Cordova CLI) : 8.0.0
   Cordova Platforms     : ios 4.5.5
   Cordova Plugins       : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 3.1.2, (and 6 other plugins)

System:

   ios-deploy : 2.0.0
   NodeJS     : v10.15.0 (/usr/local/bin/node)
   npm        : 6.7.0
   OS         : macOS Mojave
   Xcode      : Xcode 10.1 Build version 10B61

This app works find in iPhoneX (12.1.4). I think the problem is the app version below 10.
I only added BLE native plugin.

Please help me.

Thank you

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