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browser: chrome-desktoponly manifests in desktop Chromeonly manifests in desktop Chromee: wasmIssues related to the wasm build of Flutter Web.Issues related to the wasm build of Flutter Web.found in release: 3.32Found to occur in 3.32Found to occur in 3.32found in release: 3.33Found to occur in 3.33Found to occur in 3.33has reproducible stepsThe issue has been confirmed reproducible and is ready to work onThe issue has been confirmed reproducible and is ready to work onplatform-webWeb applications specificallyWeb applications specificallyr: fixedIssue is closed as already fixed in a newer versionIssue is closed as already fixed in a newer versionteam-webOwned by Web platform teamOwned by Web platform team
Description
Steps to reproduce
- flutter create wasm_app
- cd wasm_app
- flutter run -d chrome --web-browser-flag="--disable-gpu" --wasm
Expected results
Run without any error, or give a proper error message that GPU needs to be enabled for wasm.
Actual results
Uncaught RuntimeError: null function or function signature mismatch
at skwasm.wasm:0x2bb2a
at skwasm.wasm:0x1ed26c
at w._surface_renderPicturesOnWorker (skwasm.js:102:295)
at skwasm.js:33:291
at h (skwasm.js:32:321)
Code sample
Code sample
flutter create wasm_appScreenshots or Video
Screenshots / Video demonstration
[Upload media here]
Logs
Logs
Uncaught RuntimeError: null function or function signature mismatch
at skwasm.wasm:0x2bb2a
at skwasm.wasm:0x1ed26c
at w._surface_renderPicturesOnWorker (skwasm.js:102:295)
at skwasm.js:33:291
at h (skwasm.js:32:321)Flutter Doctor output
Doctor output
flutter doctor -v
[✓] Flutter (Channel stable, 3.32.8, on macOS 15.5 24F74 darwin-arm64, locale en-US) [533ms]
• Flutter version 3.32.8 on channel stable at /opt/homebrew/Caskroom/flutter/stable/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision edada7c56e (13 days ago), 2025-07-25 14:08:03 +0000
• Engine revision ef0cd00091
• Dart version 3.8.1
• DevTools version 2.45.1
[!] Android toolchain - develop for Android devices (Android SDK version 35.0.1) [1,408ms]
• Android SDK at /Users/.../Library/Android/sdk
• Platform android-35, build-tools 35.0.1
• Java binary at: /Users/.../Library/Java/JavaVirtualMachines/jbr-17.0.11/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 JBR-17.0.11+1-1312.2-nomod (build 17.0.11+1-b1312.2)
! Some Android licenses not accepted. To resolve this, run: flutter doctor --android-licenses
[✓] Xcode - develop for iOS and macOS (Xcode 16.4) [981ms]
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 16F6
• CocoaPods version 1.16.2
[✓] Chrome - develop for the web [72ms]
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2024.3) [72ms]
• 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
• Java version OpenJDK Runtime Environment (build 21.0.6+-13368085-b895.109)
[✓] IntelliJ IDEA Ultimate Edition (version 2025.1.1.1) [71ms]
• IntelliJ at /Applications/IntelliJ IDEA.app
• Flutter plugin version 86.0.2
• Dart plugin version 251.27623.5
[✓] Connected device (3 available) [6.1s]
...
[✓] Network resources [287ms]
• All expected network resources are available.
! Doctor found issues in 1 category.Related to #171402
Chrome version:
Version 139.0.7258.67 (Official Build) (arm64)
davidmigloz
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Metadata
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Labels
browser: chrome-desktoponly manifests in desktop Chromeonly manifests in desktop Chromee: wasmIssues related to the wasm build of Flutter Web.Issues related to the wasm build of Flutter Web.found in release: 3.32Found to occur in 3.32Found to occur in 3.32found in release: 3.33Found to occur in 3.33Found to occur in 3.33has reproducible stepsThe issue has been confirmed reproducible and is ready to work onThe issue has been confirmed reproducible and is ready to work onplatform-webWeb applications specificallyWeb applications specificallyr: fixedIssue is closed as already fixed in a newer versionIssue is closed as already fixed in a newer versionteam-webOwned by Web platform teamOwned by Web platform team