App Store Rejection UIWebView

Hello,

I want to upload my app to AppStore, archive is successfully uploaded but then AppStore is rejecting my app due to usage of UIWebView.
It was on ionic4 and i upgraded to ionic5 to get rid of this error.
ionic info result is below;
Ionic:

Ionic CLI : 6.12.2 (/usr/local/lib/node_modules/@ionic/cli)
Ionic Framework : @ionic/angular 5.5.2
@angular-devkit/build-angular : 0.1000.8
@angular-devkit/schematics : 10.0.8
@angular/cli : 10.0.8
@ionic/angular-toolkit : 2.3.3

Cordova:

Cordova CLI : 10.0.0
Cordova Platforms : ios 6.1.1
Cordova Plugins : cordova-plugin-ionic-keyboard 2.2.0, cordova-plugin-ionic-webview 4.2.1, (and 7 other plugins)

Utility:

cordova-res : not installed
native-run (update available: 1.3.0) : 1.2.2

System:

ios-deploy : 1.11.3
ios-sim : 8.0.2
NodeJS : v14.15.1 (/usr/local/bin/node)
npm : 6.14.8
OS : macOS Big Sur
Xcode : Xcode 12.2 Build version 12B45b

and when i check which frameworks are using UIWebView, they are
AppAuth
FBLPromises
GTMAppAuth
GTMSessionFetcher
GoogleUtilities
nanopb

and my latest podfile is this

source ‘https://cdn.cocoapods.org/

platform :ios, ‘11.0’
use_frameworks!
target ‘Prediction Game’ do
project ‘Prediction Game.xcodeproj’
pod ‘GoogleSignIn’, ‘~> 5.0.2’
pod ‘GoogleUtilities’, ‘~> 6.7’
pod ‘OneSignal’, ‘2.16.1’
pod ‘Google-Mobile-Ads-SDK’,‘7.64.0’
end
post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings[‘IPHONEOS_DEPLOYMENT_TARGET’] = ‘9.0’
end
end
end

you’ll have to check which plugins are adding
AppAuth
FBLPromises
GTMAppAuth
GTMSessionFetcher
GoogleUtilities
nanopb

and see if there are newer versions of those plugins that use more up to date versions of those libraries

Did you ever get this resolved? I’m facing the same issue.