Flutter app crash on iOS 12

Flutter app crash on iOS 12, but it's working fine on iOS 13 or later and it's working fine on simulator iOS 12.

this is
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flutter doctor -v

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[✓] Flutter (Channel stable, 1.22.5, on macOS 11.1 20C69 darwin-x64, locale en-JO)
  • Flutter version 1.22.5 at /Users/hatemswaileh/Documents/Tools/flutter
  • Framework revision 7891006299 (5 weeks ago), 2020-12-10 11:54:40 -0800
  • Engine revision ae90085a84
  • Dart version 2.10.4
 
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
  • Android SDK at /Users/hatemswaileh/Library/Android/sdk
  • Platform android-30, build-tools 30.0.3
  • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
  • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)
  • All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 12.3)
  • Xcode at /Applications/Xcode.app/Contents/Developer
  • Xcode 12.3, Build version 12C33
  • CocoaPods version 1.10.0
[✓] Android Studio (version 4.1)
  • Android Studio at /Applications/Android Studio.app/Contents
  • Flutter plugin installed
  • Dart plugin version 201.9317
  • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)
[✓] Connected device (1 available)
  • iPhone 6 Plus (mobile) • 8E82289E-19A5-42F3-A33A-796BEDA3D954 • ios • com.apple.CoreSimulator.SimRuntime.iOS-12-4 (simulator)
• No issues found!


and this is the debug error that I'm getting when running the app on a physical device iOS 12




and on the debug memory graph the memory is stable on 1.01GB which is 6.3%

Kindly help me with this.
Flutter is not a framework of Apple's. You would get helped better visiting the supporting site or a community site of Flutter.
Sure but the problem is happening on iOS 12 not on any other operating system, other operating systems is working fine and there is no problems, and iOS 13 or later is working fine, this error is happening on xcode and xcode from apple that's why I wrote the issue here.
Flutter app crash on iOS 12
 
 
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