how to solve Execution failed for task ':app:compileFlutterBuildDebug'

I was trying to run my Flutter app and this shows up:

 Compiler message: lib/main.dart:1:8: Error: Not found: 'dart:html' import 'dart:html'; ^ Invalid depfile: C:\Users\IMBA\AndroidStudioProjects\mi_card_flutter-master\.dart_tool\flutter_build\410385fb4867e1d74565d68665ecb577\kernel_snapshot.d Invalid depfile: C:\Users\IMBA\AndroidStudioProjects\mi_card_flutter-master\.dart_tool\flutter_build\410385fb4867e1d74565d68665ecb577\kernel_snapshot.d ... Compiler message: lib/main.dart:1:8: Error: Not found: 'dart:html' import 'dart:html'; ^ Unhandled exception: FileSystemException(uri=org-dartlang-untranslatable-uri:dart%3Ahtml; message=StandardFileSystem only supports file:* and data:* URIs) #0 StandardFileSystem.entityForUri (package:front_end/src/api_prototype/standard_file_system.dart:33:7) #1 asFileUri (package:vm/kernel_front_end.dart:567:37) #2 writeDepfile (package:vm/kernel_front_end.dart:760:21) <asynchronous suspension> #3 FrontendCompiler.compile (package:frontend_server/frontend_server.dart:536:15) <asynchronous suspension> #4 _FlutterFrontendCompiler.compile (package:flutter_frontend_server/server.dart:40:22) #5 starter (package:flutter_frontend_server/server.dart:178:27) #6 main (file:///C:/b/s/w/ir/cache/builder/src/flutter/flutter_frontend_server/bin/starter.dart:8:30) #7 _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:299:32) #8 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168:12) Target kernel_snapshot failed: Exception: Errors during snapshot creation: null build failed. FAILURE: Build failed with an exception. * Where: Script 'C:\Users\IMBA\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 882 * What went wrong: Execution failed for task ':app:compileFlutterBuildDebug'. > Process 'command 'C:\Users\IMBA\flutter\bin\flutter.bat'' finished with non-zero exit value 1 * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. * Get more help at BUILD FAILED in 16s Exception: Gradle task assembleDebug failed with exit code 1 

And something else showed up after I used the --scan flag in the problem section.

java.lang.ClassNotFoundException: com.google.wireless.android.sdk.stats.IntellijIndexingStats$Index at java.net.URLClassLoader.findClass(URLClassLoader.java:382) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at com.intellij.util.indexing.counters.IndexCounters.<clinit>(IndexCounters.java:34) at com.intellij.util.indexing.impl.MapReduceIndex.<init>(MapReduceIndex.java:94) at com.intellij.util.indexing.impl.MapReduceIndex.<init>(MapReduceIndex.java:110) at org.jetbrains.jps.backwardRefs.index.CompilerReferenceIndex$CompilerMapReduceIndex.<init>(CompilerReferenceIndex.java:248) at org.jetbrains.jps.backwardRefs.index.CompilerReferenceIndex.<init>(CompilerReferenceIndex.java:84) at org.jetbrains.jps.backwardRefs.JavaCompilerBackwardReferenceIndex.<init>(JavaCompilerBackwardReferenceIndex.java:12) at org.jetbrains.jps.backwardRefs.JavaBackwardReferenceIndexWriter.initialize(JavaBackwardReferenceIndexWriter.java:80) at org.jetbrains.jps.incremental.java.JavaBuilder.buildStarted(JavaBuilder.java:149) at org.jetbrains.jps.incremental.IncProjectBuilder.runBuild(IncProjectBuilder.java:359) at org.jetbrains.jps.incremental.IncProjectBuilder.build(IncProjectBuilder.java:178) at org.jetbrains.jps.cmdline.BuildRunner.runBuild(BuildRunner.java:139) at org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:288) at org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:121) at org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler.lambda$channelRead0$0(BuildMain.java:228) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) 

I took all the material of this Flutter app from the appbrewery Flutter course. This happens when I was trying to make the MIcard project. Any thoughts to solving this problem?

18 Answers

Something that work for me is: Delete your pubspec.lock, and press 'Pub Get' in your pubspec.yaml, it'll regenerate pubspec.lock file again and should fix the problem.

Go to pubspec.yaml file, try doing Packages get | Pub get, and then build the project again.

I faced the same error and further, I tried:

1. flutter clean
2. flutter pub get in the terminal, and the issue solved!

Optimizing imports (Ctrl + Alt + O) in Android Studio solved the issue for me.

Just faced this issue, I solved it by removing an unused import

import 'dart:js'; 

the issue started when I added it by mistake, took a while to realize it was the issue

Just in case, do this:

IntelliJ/Android Studio: "Edit Configurations" (in your run configurations) → "Additional run args".

VS Code: search for "Flutter run additional args" in your user settings.

Then, add:

--no-sound-null-safety 

This fixed the problem for me. What this basically does is that, if you use an import that doesn't support null safety, Flutter ignores it.

This error happens when indentation is not proper in pubspec.yaml file. Make sure font and other dependencies are having right indentation.

Removing .gradle folder helped

Gradle is located at

On Windows: %USERPROFILE%\.gradle On Mac / UNIX: ~/.gradle 

1. Close android studio.
2. Remove whole .gradle folder.
3. Open Android studio and build.

This should work!!!

flutter clean,

flutter pub get,

flutter build appbundle --release --no-tree-shake-icons

I found solution update flutter sdk.

flutter channel stable flutter upgrade --force 

This worked for me.

Deleted build and android/app/build.

1. Go to the pubspec.yaml file and Download packages

OR

1. Go to Terminal flutter pub get

2. Upgrade Flutter flutter upgrade --force

3. Run Flutter App Press F5 or flutter run

Try this, it might work for you

flutter clean,

flutter pub get,

flutter build apk --release --no-tree-shake-icons If you have flavours then add flavour with the build command. And update the minimumsdk to a higher version compatible with java version.

I couldn't build for iOS, so I deleted flutter/bin/cache/artifacts. iOS works well then building Android had the same error. I tried flutter upgrade and that solved the problem.

Most of the time for me it's like

• Misspelled assets name
• Non-Existing asset/directory name

I managed to solve this problem by reading a different topic here: Recompile with Xlint

First, find your build.gradle file from the Android folder (Android/app/build.gradle)

Then paste the following code inside the android brackets {}:

allprojects { tasks.withType(JavaCompile) { options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation" }} 

I have pasted it at the bottom before the end bracket and it worked for me.

After this, just restart your app and it should work.

I also tried this, thanks to iapicca

run in your terminal

flutter channel stable

flutter upgrade --force

flutter pub cache repair

next,

cd <YOUR APP FOLDER>

flutter clean

In my case, it was because of flutter/bin/cache/artifact folder. Be sure that you didn't manipulate this folder before.