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Multiple MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule exceptions are printed out when scrolling the image list #164537

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#165009
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Multiple MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule exceptions are printed out when scrolling the image list#164537
#165009
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P2Important issues not at the top of the work lista: imagesLoading, displaying, rendering imagesa: null-safetySupport for Dart's null safety featurec: regressionIt was better in the past than it is nowfound in release: 3.30Found to occur in 3.30frameworkflutter/packages/flutter repository. See also f: labels.from: manual-qaIssue caught from manual QA processhas reproducible stepsThe issue has been confirmed reproducible and is ready to work onr: fixedIssue is closed as already fixed in a newer versionteam-frameworkOwned by Framework teamtriaged-frameworkTriaged by Framework teamwaiting for PR to land (fixed)A fix is in flight
@huycozy

Description

@huycozy
huycozy
opened on Mar 4, 2025

Steps to reproduce

  1. Install and run Wonderous app on Android and iOS, my devices are: Pixel 7, Android 15 and iPhone 16 Pro Max (iOS 18.3.1).
  2. Navigate to Artifacts tab from the bottom navigation bar
  3. Tap on BROWSE ALL ARTIFACTS button
  4. Drag the horizontal carousel and observe the run output console

Obervered this on Flutter master version 3.30.0-1.0.pre.448, while it doesn't happen on Flutter stable 3.29.0.

This looks similar to an old issue #71344.

Expected results

no exception/error is printed

Actual results

Multiple same errors are printed out when dragging the carousel:

E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>

Code sample

Code sample

https://github.com/gskinnerTeam/flutter-wonderous-app

Screenshots or Video

Screenshots / Video demonstration
Screen.Recording.2025-03-04.at.14.40.35.mov

Logs

Logs 
/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767): 
E/flutter ( 9767): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Null check operator used on a null value
E/flutter ( 9767): #0      MultiFrameImageStreamCompleter._decodeNextFrameAndSchedule (package:flutter/src/painting/image_stream.dart:1111:13)
E/flutter ( 9767): <asynchronous suspension>
E/flutter ( 9767):

Flutter Doctor output

Doctor output 
[!] Flutter (Channel master, 3.30.0-1.0.pre.448, on macOS 15.3.1 24D70 darwin-x64, locale en-VN) [4.1s]
    • Flutter version 3.30.0-1.0.pre.448 on channel master at /Users/huynq/Documents/GitHub/flutter_master
    ! Warning: `flutter` on your path resolves to /Users/huynq/Documents/GitHub/flutter/bin/flutter, which is not inside your current Flutter SDK checkout at /Users/huynq/Documents/GitHub/flutter_master. Consider adding /Users/huynq/Documents/GitHub/flutter_master/bin to the front of your path.
    ! Warning: `dart` on your path resolves to /Users/huynq/Documents/GitHub/flutter/bin/dart, which is not inside your current Flutter SDK checkout at /Users/huynq/Documents/GitHub/flutter_master. Consider adding /Users/huynq/Documents/GitHub/flutter_master/bin to the front of your path.
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 24418d0d80 (2 hours ago), 2025-03-04 00:04:22 -0500
    • Engine revision 24418d0d80
    • Dart version 3.8.0 (build 3.8.0-133.0.dev)
    • DevTools version 2.43.0
    • If those were intentional, you can disregard the above warnings; however it is recommended to use "git" directly to perform update checks and upgrades.

[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.1) [4.5s]
    • Android SDK at /Users/huynq/Library/Android/sdk
    • Platform android-35, build-tools 35.0.1
    • ANDROID_HOME = /Users/huynq/Library/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
      This JDK is specified in your Flutter configuration.
      To change the current JDK, run: `flutter config --jdk-dir="path/to/jdk"`.
    • Java version OpenJDK Runtime Environment (build 21.0.5+-12932927-b750.29)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 16.2) [1,828ms]
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 16C5032a
    • CocoaPods version 1.16.2

[✓] Chrome - develop for the web [27ms]
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2024.3) [25ms]
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • android-studio-dir = /Applications/Android Studio.app
    • Java version OpenJDK Runtime Environment (build 21.0.5+-12932927-b750.29)

[✓] VS Code (version 1.97.2) [23ms]
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.106.0

[✓] Connected device (4 available) [7.2s]
    • Pixel 7 (mobile)                      • 2B171FDH20084L            • android-arm64  • Android 15 (API 35)
    • iPhone 16 pro max (wireless) (mobile) • 00008140-00194CC23A68801C • ios            • iOS 18.3.1 22D72
    • macOS (desktop)                       • macos                     • darwin-x64     • macOS 15.3.1 24D70 darwin-x64
    • Chrome (web)                          • chrome                    • web-javascript • Google Chrome 133.0.6943.142

[✓] Network resources [477ms]
    • All expected network resources are available.

! Doctor found issues in 1 category.

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    P2Important issues not at the top of the work lista: imagesLoading, displaying, rendering imagesa: null-safetySupport for Dart's null safety featurec: regressionIt was better in the past than it is nowfound in release: 3.30Found to occur in 3.30frameworkflutter/packages/flutter repository. See also f: labels.from: manual-qaIssue caught from manual QA processhas reproducible stepsThe issue has been confirmed reproducible and is ready to work onr: fixedIssue is closed as already fixed in a newer versionteam-frameworkOwned by Framework teamtriaged-frameworkTriaged by Framework teamwaiting for PR to land (fixed)A fix is in flight

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