Flutter: Execution failed for task ':app:compileDebugKotlin'

Question

I tried running the default flutter app from flutter create on my android device but it throws me an error. Can someone help?

Launching lib\main.dart on SM G610F in debug mode... Running Gradle task 'assembleDebug'...

FAILURE: Build failed with an exception.

What went wrong: Execution failed for task ':app:compileDebugKotlin'.

Could not resolve all artifacts for configuration ':app:debugCompileClasspath'. . . .

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 https://help.gradle.org

BUILD FAILED in 14s Finished with error: Gradle task assembleDebug failed with exit code 1

This is my flutter doctor:

[√] Flutter (Channel stable, v1.12.13+hotfix.5, on Microsoft Windows [Version 10.0.10586], locale en-US) • Flutter version 1.12.13+hotfix.5 at E:\flutter\flutter • Framework revision 27321ebbad (6 weeks ago), 2019-12-10 18:15:01 -0800 • Engine revision 2994f7e1e6 • Dart version 2.7.0

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.2) • Android SDK at C:\Users\208046\AppData\Local\Android\sdk • Android NDK location not configured (optional; useful for native profiling support) • Platform android-29, build-tools 29.0.2 • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03) • All Android licenses accepted.

[√] Android Studio (version 3.5) • Android Studio at C:\Program Files\Android\Android Studio • Flutter plugin version 42.1.1 • Dart plugin version 191.8593 • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)

[√] VS Code, 64-bit edition (version 1.41.1) • VS Code at C:\Program Files\Microsoft VS Code • Flutter extension version 3.7.1

[√] Connected device (1 available) • SM G610F • 33005566b2b5c3df • android-arm • Android 8.1.0 (API 27)

• No issues found!

edit: for my complete logs you can see here:

Flutter github issues

As suggested [here](https://stackoverflow.com/questions/43848845/errorexecution-failed-for-task-appcompiledebugkotlin-compilation-error), this could be an issue with the android/kotlin build. I assume you successfully created a flutter project. In that case did you try to do a `flutter clean`. Also please mention the steps you already followed, that could help. — Abhilash Chandran, Jan 24 '20 at 09:05
All I did was create a new flutter project from VS Code and run on my device. That's it. This is very frustrating because I created a web flutter project and I can run it just fine. — Serpentarius, Jan 24 '20 at 09:10
Please don't be frustrated. :-) Based on the logs in your github post it looks like the build process is trying to download some `jar` files which are not available in server. Good that you posted the same in Github. Just a hunch, could you try to run on a simulator instead of a device. — Abhilash Chandran, Jan 24 '20 at 09:21
I just recreated the project on my coworker pc and it ran fine on android device — Serpentarius, Jan 24 '20 at 09:23
I had the same problem but for release: `Execution failed for task ':fluttertoast:compileReleaseKotlin'.` And `flutter clean` took care of it! (When will I learn to just try that for all problems?! ‍♀️) — Karolina Hagegård, May 01 '21 at 14:30

score 105 · Answer 1 · edited Jun 27 '21 at 04:39

105

Go to your build.gradle file in the root of your Android directory and upgrade your Kotlin_version to the latest. As of the time of typing this, the latest is 1.5.10, so it should look like this:

ext.kotlin_version = '1.5.10'

edited Jun 27 '21 at 04:39

Jeremy Caney

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answered Jun 03 '21 at 06:27

Ilo Calistus

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9

Thank you! It fixed my problem when adding the package audioplayers: ^0.19.0 I started on the flutter code using 'Flutter create' 2 days ago and this created a build.gradle file with 'ext.kotlin_version = '1.3.50' – user872985 Jun 04 '21 at 14:35
Is there a place explaning the update process of such things? For example my dependencies classpath is also requesting some sort of update – harlekintiger Aug 24 '21 at 09:32
Which exact dependencies is requesting an update? – Ilo Calistus Aug 25 '21 at 12:44
1

It's works with me, thanks – Abdallah El-Rashedy Sep 26 '21 at 12:02
sometimes you may get **':app:mergeDexDebug'** error after this fix. Refer https://stackoverflow.com/a/60311131/10505343 after that – Wimukthi Rajapaksha Oct 01 '21 at 22:28
1

this works perfectly thank you. I found the build.gradle under the project->android->build.gradle – Mohamed Raza Oct 07 '21 at 18:12
thanks worked for me. By the way don't forget after upgrade kotlin version. – Eray Hamurlu Dec 02 '21 at 14:27
2

FYI, to find the **latest Kotiln's version**, you can get i from [here](https://kotlinlang.org/docs/releases.html#release-details) – Muhammad Faisal Apr 12 '23 at 03:43

score 50 · Answer 2 · edited Aug 15 '22 at 08:37

50

Solved the problem by deleting android/.gradle and then run the app in debug mode

edited Aug 15 '22 at 08:37

liam spiegel

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answered May 02 '20 at 07:47

theeomm

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where can i find in Mac? – Zionnite Apr 30 '21 at 14:32
2

@Zionnite does not matter which OS you are using. `flutter_project_root/android/.gradle` – theeomm May 01 '21 at 05:37
2

Why is this not the accepted answer? Someone deserves the credit! – theSpuka May 18 '21 at 20:17
1

what is inside that folder ? – Ced Apr 01 '22 at 15:37
4

Solved by "flutter clean" then "flutter pub get" – Hardik Jun 27 '22 at 04:45

score 33 · Answer 3 · answered Jun 03 '21 at 07:36

A possible fix can be upgrading the project/android/build.gradle Steps to fix,

flutter clean
Delete android/.gradle
Go to android/build.gradle, upgrade ext.kotlin_version to latest. In my case(1.3.0 -> 1.5.10), ext.kotlin_version = '1.5.10'

After doing this as well, I was getting `A problem occurred evaluating project ':app'.

Failed to apply plugin [id 'kotlin-android'] The current Gradle version 5.6.2 is not compatible with the Kotlin Gradle plugin. Please use Gradle 6.1 or newer, or the previous version of the Kotlin plugin.`

To fix this,

Go to android/gradle/wrapper/gradle-wrapper.properties
Update the distributionUrl to the latest version.In my case((5.6.2 -> 6.1.1) it is, distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip

score 11 · Answer 4 · answered Aug 23 '21 at 07:32

It was fixed after I upgraded my build.gradle file ext.kotlin_version = '1.5.10'

First of all run

flutter clean
flutter pub get

Go to andriod/build.gradle then upgrade ext.kotlin_version

buildscript {
    ext.kotlin_version = '1.5.10'
    repositories {
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

score 7 · Answer 5 · answered Feb 17 '20 at 21:02

For me, I found that when building that 2 different MainActivity.kt files were in andriod/app/src/main/kotlin. One had a default MainActivity.kt file with the package name that was originally generated for my project. Something like 'example.project_name' . The other one had what I changed my project name into. I went ahead and deleted the folder with the MainActivity.kt containing the import starting with 'example.project_name' and that resolved the issue for me.

score 7 · Answer 6 · answered Feb 17 '21 at 11:29

7

in android folder of your project run in terminal

gradlew clean

Then build. This worked for me.

answered Feb 17 '21 at 11:29

Tushar Gautam

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Showing gradew is not recognizable? why? – Pro Co Jun 03 '21 at 10:03
1

@ProCo which OS are you using? if it is linux, cd into your project's android/ and then try doing ./gradlew clean – Tushar Gautam Jun 03 '21 at 15:31

score 4 · Accepted Answer · answered Jan 31 '20 at 03:59

4

I solved it. It was because of my network blocked non secured http download request. I changed my network and the gradle build completed itself.

answered Jan 31 '20 at 03:59

Serpentarius

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score 4 · Answer 8 · answered May 20 '20 at 18:12

4

It was fixed after I upgraded my Flutter by running flutter upgrade

answered May 20 '20 at 18:12

Koleen BP

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score 4 · Answer 9 · edited Oct 09 '21 at 09:34

4

I Solved it by upgrading kotlin version in root build.gradle file:

ext.kotlin_version = '1.5.10'

edited Oct 09 '21 at 09:34

Hooshyar

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answered Oct 05 '21 at 20:57

AMR SAMY

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score 4 · Answer 10 · answered Mar 01 '22 at 13:44

4

First of make sure that you have latest version of flutter. For confirmation, please run flutter upgrade in command prompt / terminal:

flutter upgrade

Then visit the site Click Here and copy the new latest version of kotlin. For now: in March 02, 2022 current kotlin version is 1.6.10

Then after it:

-> Go to android/build.gradle
-> change to ext.kotlin_version = '1.6.10'

Click here to view Screenshot example

answered Mar 01 '22 at 13:44

Muhammad Ali

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its not always the case to upgrade the flutter. in case of the old projects upgrading versions without knowing the issue can make so much problem – Dhananjay Gavali Jul 08 '22 at 22:40

score 4 · Answer 11 · answered May 18 '22 at 14:15

I Update Flutter from 2.10.4 to Flutter 3.0.0 and I found All My Project Has Same Error

ensure that your ext.kotlin_version is '1.6.10'

ext.kotlin_version = '1.6.10'

and run in terminal

flutter pub cache repair

and show that your libraries in pubspec.yamel take last version and run in terminal

1 - flutter clean

2 - flutter pub get

in android studio open File --> invalidate cashes..

this worked for me !!

if this not work for you you may be need to

Delete android/.gradle

thank you .

flutter pub cache repair | Saved my day – Amin Memariani Dec 20 '22 at 22:12 — Amin Memariani, Dec 20 '22 at 22:12

score 3 · Answer 12 · answered Mar 04 '21 at 07:49

3

I got the problem after migrating to null-safety. I fixed it by updating the kotlin version in the file android\build.gradle

ext.kotlin_version = '1.3.50'

Then run 'flutter clean' and the app worked fine.

answered Mar 04 '21 at 07:49

Hyung Tae Carapeto Figur

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score 2 · Answer 13 · answered Jun 07 '20 at 15:00

I have been facing this issue for couple of hours. At the end right now my issue solved by executing following steps -

- change Settings -> Build, Execution, Development -> Compiler -> Kotlin Compiler -> Kotlin to JVM -> check Enable incremental comilation -> Target JVM version 1.6 to 1.8

- add to build.gradle under repositories in both buildscript and allprojects section

maven {
        url 'http://download.flutter.io'
    }

-and lastly run on command line 'flutter pub cache repair'

score 2 · Answer 14 · answered Sep 09 '21 at 11:05

2

I encountred the same problem and tried all the solutions proposed here in this post ... and still not working.

but only after upgrading the packages in pubspec.yaml with:

flutter pub upgrade

it worked !!

answered Sep 09 '21 at 11:05

AceP

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score 2 · Answer 15 · answered Oct 26 '21 at 10:18

2

Just increase the ext.kotlin.version from whatever version you have, to '1.4.32' or whatever the latest version is available kotline version

answered Oct 26 '21 at 10:18

gautam singh rathore

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score 2 · Answer 16 · answered May 12 '22 at 10:49

2

Update to the latest version in my case it is 1.6.10 or create dummy project and check android/build.gradle and update.

ext.kotlin_version = '1.6.10'

answered May 12 '22 at 10:49

user8819119

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score 2 · Answer 17 · answered Mar 05 '23 at 13:07

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For me, upgrade to Flutter 3.7.6 solved my problem, just run on your terminal

flutter upgrade

answered Mar 05 '23 at 13:07

Gabo MC

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score 1 · Answer 18 · answered Oct 23 '20 at 08:19

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when I ran flutter upgrade in the command line prompt it was fixed and ran my app .. try it

answered Oct 23 '20 at 08:19

Hussam Hassan El-razzaz

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score 1 · Answer 19 · answered Oct 23 '20 at 18:37

1

Faced the same issue: Execution failed for task ':app:compileDebugKotlin'. Execution failed for task ':app:compileDebugKotlin'.

solution: Changed the company domain with only one dot. solution

answered Oct 23 '20 at 18:37

Abdul Agfar

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score 1 · Answer 20 · answered Mar 28 '21 at 13:24

1

I was using JRE for Java. I just install the AdoptOpenJDK 11 and it works

answered Mar 28 '21 at 13:24

Pierre Monier

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score 0 · Answer 21 · answered Mar 23 '22 at 19:32

0

For me, my package name imported twice automatically in MainActivity file under app>main>kotlin directory. I just delete duplicates and it works fine now!

answered Mar 23 '22 at 19:32

Al Mamun

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score 0 · Answer 22 · answered Jul 27 '22 at 10:00

In our case, the package flutter_appcenter_bundle caused this issue.

To fix it, you need to run flutter precache.

This needs to be done only once and it will be effective as long as the Flutter version remains unchanged and the precached artifacts are not deleted (e.g. by deleting the Flutter root folder).

Also, the environment variable FLUTTER_ROOT needs to be set to the Flutter root folder. On Windows it's usually C:\src\flutter.

If you use AndroidStudio, you can do that in Settings > Languages & Frameworks > Flutter.

If you don't use AndroidStudio, you need to set FLUTTER_ROOT manually.

score 0 · Answer 23 · answered Jul 03 '23 at 06:32

0

For me, I had some syntax error in android/app/src/main/kotlin/com/<pakckage_name>/app/MainActivity.kt

answered Jul 03 '23 at 06:32

Apoorv Pandey

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score 0 · Answer 24 · answered Aug 10 '23 at 21:18

0

Run "flutter clean" and get dependencies again

answered Aug 10 '23 at 21:18

Shanika Perera

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score 0 · Answer 25 · answered Aug 27 '23 at 12:40

In my case, I had to set the JavaVersion according to the Kotlin version.

So to fix this error:

'compileDebugJavaWithJavac' task (current target is 1.7) and 'compileDebugKotlin' task (current target is 17)

I had to set this values in the file build.gradle:

compileOptions {
    sourceCompatibility JavaVersion.VERSION_17
    targetCompatibility JavaVersion.VERSION_17
}

Flutter: Execution failed for task ':app:compileDebugKotlin'

25 Answers25

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