The argument type 'Null Function(ImageInfo, bool)' can't be assigned to the parameter type 'ImageStreamListener'.

[841660202]

`Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.7.8+hotfix.3, on Mac OS X 10.14.5 18F132, locale zh-Hans-CN)

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[✓] Xcode - develop for iOS and macOS (Xcode 10.1)
[✓] iOS tools - develop for iOS devices
[✓] Android Studio (version 3.1)
[✓] IntelliJ IDEA Ultimate Edition (version 2019.1.1)
[✓] Connected device (1 available)

• No issues found!`

`
cached_network_image: ^1.0.0

keyboard_actions: ^2.1.1

dio: ^2.1.7

common_utils: ^1.1.1

flustars: ^0.2.6+1

sprintf: ^4.0.2

`