image load from assets only when app app restarted (vs code)

When I run the app it does not show the AssetImage first time, but when I click the restart button, app restarts and then shows the image.

Here is source

  Padding(
                padding: const EdgeInsets.only(top: 30.0),
                child: Image(
                  image: AssetImage("assets/images/iconotp.png"),
                  height: 120.0,
                  width: 120.0,
                ),
              ),

here pubspec.yaml file

    name: abc description: A new Flutter project.

version: 1.0.0+1

environment:   sdk: ">=2.1.0 <3.0.0"

dependencies:   flutter:
    sdk: flutter
     flutter_typeahead: ^1.8.0   flutter_webview_plugin: ^0.3.10+1   share: ^0.6.3+5   font_awesome_flutter: ^8.5.0   flutter_screenutil: ^1.0.2   image_picker: ^0.6.3+1   provider: ^2.0.1   http: ^0.12.0+4   get_it: ^3.1.0   connectivity: ^0.4.6+2   email_validator: ^1.0.4   shared_preferences: ^0.5.6+1   google_maps_flutter: ^0.5.22   flutter_share_me: ^0.9.1   cupertino_icons: ^0.1.3   flutter_datetime_picker: ^1.3.4

   dev_dependencies:   flutter_test:
    sdk: flutter

flutter:   uses-material-design: true   assets:
    - assets/images/
    - res/

  fonts:
    - family: OpenSans-Light
      fonts:
        - asset: Assets/open_sans/OpenSans-Light.ttf
    - family: WorkSansSemiBold
      fonts:
        - asset: assets/fonts/Work_Sans/WorkSans-SemiBold.ttf

    - family: WorkSansBold
      fonts:
        - asset: assets/fonts/Work_Sans/WorkSans-Bold.ttf

    - family: WorkSansMedium
      fonts:
        - asset: assets/fonts/Work_Sans/WorkSans-Medium.ttf

    - family: ostrichsansNormal
      fonts:
        - asset: assets/fonts/ostrich_sans/ostrich-regular.ttf

Flutter doctor

flutter doctor Doctor summary (to see all details, run flutter doctor -v): [√] Flutter (Channel stable, v1.12.13+hotfix.7, on Microsoft Windows [Version 10.0.18362.476], locale en-US)

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.0) [√] Android Studio (version 3.5) [√] VS Code, 64-bit edition (version 1.41.1) [√] Connected device (1 available)

• No issues found!