Flutterで作成したアプリをiOS実機で実行すると、「Thead 1: sinal SIGABRT」になる。

#エラー・環境・状況

状況

最近Flutterをはじめました。
作成したアプリをiOSの実機で確認しようと思って ios ディレクトリ内の Runner.xcworkspace を起動して実行してみたのですが「Thread 1: signal SIGABRT」になってしまいうまく実行できません。

エミュレータでは問題なく実行できます。
一度だけなぜか実機で動きました。（エミュレータ起動してから実機動かしたらうまくいったよ！っていうStackOverFlowの記述を見つけて試したらうまくいった。その時と状況は同じだが、ソースコードは変わっている）

環境

Mac OSX 10.15.1
Xcode 11.2.1
iOS 13.2.2

##エラー
エラーとFlutterの環境情報です。

Thread 1: signal SIGABRTが表示される部分のコード

swift
1import UIKit
2import Flutter
3
4@UIApplicationMain
5@objc class AppDelegate: FlutterAppDelegate {    // Thread 1: signal SIGABRTが表示される場所
6  override func application(
7    _ application: UIApplication,
8    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
9  ) -> Bool {
10    GeneratedPluginRegistrant.register(with: self)
11    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
12  }
13}

Xcodeのコンソールに表示されるError

2019-11-23 11:43:56.766945+0900 Runner[5908:1435388] [VERBOSE-2:dart_vm_data.cc(19)] VM snapshot invalid and could not be inferred from settings.
2019-11-23 11:43:56.767036+0900 Runner[5908:1435388] [VERBOSE-2:dart_vm.cc(245)] Could not setup VM data to bootstrap the VM from.
2019-11-23 11:43:56.767068+0900 Runner[5908:1435388] [VERBOSE-2:dart_vm_lifecycle.cc(89)] Could not create Dart VM instance.
2019-11-23 11:43:56.767638+0900 Runner[5908:1435388] [VERBOSE-3:shell.cc(212)] Check failed: vm. Must be able to initialize the VM.
(lldb)

Flutter doctor -v

$ flutter doctor -v
[✓] Flutter (Channel stable, v1.9.1+hotfix.6, on Mac OS X 10.15.1 19B88, locale ja-JP)
    • Flutter version 1.9.1+hotfix.6 at /Users/chibatoshinori/tools/flutter
    • Framework revision 68587a0916 (2 months ago), 2019-09-13 19:46:58 -0700
    • Engine revision b863200c37
    • Dart version 2.5.0

 
[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at /Users/chibatoshinori/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-29, build-tools 28.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.2.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 11.2.1, Build version 11B500
    • CocoaPods version 1.8.4

[✓] Android Studio (version 3.5)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 41.1.2
    • Dart plugin version 191.8593
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)

[!] IntelliJ IDEA Community Edition (version 2019.2.4)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • For information about installing plugins, see
      https://flutter.dev/intellij-setup/#installing-the-plugins

[✓] VS Code (version 1.40.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.6.0

[!] Connected device
    ! No devices available

! Doctor found issues in 2 categories.