Flutter build error for the first time :Could not open settings remapped class cache for 7yvt6la2007dno98lt3rzbguf

Question

I just downloaded Flutter and tried to learn the emulator with the first default code which Google offered. But it does not run at all!

I have the dart and flutter plugins installed. I also changed the order of jcenter() and google() too

like this:

buildscript {
    ext.kotlin_version = '1.3.50'
    repositories {
        jcenter()
        google()
    }

   
dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'

        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        jcenter()
        google()

    }
}

And the error is:

Launching lib/main.dart on Android SDK built for x86 in debug mode...
Running Gradle task 'assembleDebug'...

FAILURE: Build failed with an exception.

* What went wrong:
Could not open settings remapped class cache for 7yvt6la2007dno98lt3rzbguf (/Users/[myname]/.gradle/caches/5.6.2/scripts-remapped/settings_7iv4l88jiyzeatj2wku74hwcv/7yvt6la2007dno98lt3rzbguf/settings8410a2d21ed2f87c8a0398566330ee52).
> Could not open settings generic class cache for settings file '/Users/[myname]/AndroidStudioProjects/test_app/android/settings.gradle' (/Users/[myname]/.gradle/caches/5.6.2/scripts/7yvt6la2007dno98lt3rzbguf/settings/settings8410a2d21ed2f87c8a0398566330ee52).
   > BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 57

* 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 568ms
Finished with error: Gradle task assembleDebug failed with exit code 1

Cyrax · Accepted Answer · 2021-07-07 05:02:56Z

16

You need to update version of Gradle:

go to https://gradle.org/install/ and get info about last version (for now it is 7.1.1)
open gradle/wrapper/gradle-wrapper.properties and change version to last

distributionUrl=https://services.gradle.org/distributions/gradle-7.1.1-all.zip

answered Jul 7, 2021 at 5:02

Cyrax

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Baracus · Accepted Answer · 2021-05-29 11:07:21Z

12

If you are in Windows 10, set the JAVA_HOME environment variable to the JRE for Android Studio. For example:

C:\Program Files\Android\Android Studio\jre

answered May 29, 2021 at 11:07

Baracus

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Anat's · Accepted Answer · 2020-02-10 04:55:27Z

8

I got it! My current java version was 12 and I downgraded it to Java 8. Then everything works fine.

I'll leave it, hoping it can help somebody struggling in the future will

answered Feb 10, 2020 at 4:55

Anat's

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2 Comments

Adel Khial Over a year ago

If you don't want to use Java 8 for everything else on your system you can set the JDK to be used by gradle in gradle.properties. See stackoverflow.com/a/21212790/2382389

Praveen Kumar Selvaraj Over a year ago

It worked perfectly once I uninstalled the higher version of Java.

MendelG · Accepted Answer · 2021-05-20 00:50:32Z

7

I had the same issue with a slightly different error message:

... Could not open settings remapped class cache for 3n8ygcxrc7nelqcw5tzib8bo6....

I was able to resolve this issue by opening the android folder in my project with Android Studio and syncing Gradle. Here's how:

Let's say that my current Flutter project is in the directory C:\Users\Mendel\Documents\Flutter Projects\test. In this directory, there's an android folder, open this android folder in Android Studio instead of your current Flutter project, (goto File -> Open) and let Gradle Sync run (it will run automatically, the process will take some time). Once done, re-open your Flutter project.

edited May 20, 2021 at 0:50

answered May 14, 2021 at 23:24

MendelG

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Chamindu · Accepted Answer · 2020-11-24 09:28:31Z

4

I don't know reason for this error. But I was updated gradle version to the latest in gradle-wrapper.properties file. Then sync. It worked for me.

distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-all.zip

answered Nov 24, 2020 at 9:28

Chamindu

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Sterlingking · Accepted Answer · 2021-09-11 10:24:39Z

4

In other, for me to solve this issue,

I had to open my project in finder and then
Dragged the android folder onto Android Studio. It will start from afresh to resync my project with all neccessary conflicting gradle versions and jdk's .

Note while the syncing was going on, I made sure to accept every upgrade recommendation brought up on the dialog until the process was completed.

When this was done, I went back to my project, ran it again and it worked smoothly.

answered Sep 11, 2021 at 10:24

Sterlingking

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1 Comment

bandungeuy Over a year ago

How to do this on Visual Studio Code?

BAIMAM BOUKAR JEAN JACQUES · Accepted Answer · 2023-09-17 22:42:29Z

3

Working solution 2023

I faced the exact same issue.... Spent couple of hours figuring it out! Here are things I did to get the thing working

Delete .gradle folder. In my case, I'm on MacOs... So I executed sudo rm -r ~./gradle
Upgrade your Java version
Execute ./gradlew clean in the android directory of your project
Run pub flutter clean then flutter pub get
Launch the build, and it should be fine ✨

answered Sep 17, 2023 at 22:42

BAIMAM BOUKAR JEAN JACQUES

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Rajitha Udayanga · Accepted Answer · 2021-09-20 02:05:36Z

2

Delete the .gradle file and then run ./gradlew clean

answered Sep 20, 2021 at 2:05

Rajitha Udayanga

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Bohdan Skochko · Accepted Answer · 2021-05-28 12:35:19Z

1

I had the same issue: For fixing install openJdk8 version https://adoptopenjdk.net/upstream.html?variant=openjdk11&jvmVariant=openjdk8 Also, change the path to OpenJDK place

answered May 28, 2021 at 12:35

Bohdan Skochko

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Gk Mohammad Emon · Accepted Answer · 2023-03-02 11:55:37Z

1

Please update gradle version

distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip

in gradle-wrapper.properties

edited Mar 2, 2023 at 11:55

Gk Mohammad Emon

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answered Feb 3, 2023 at 17:42

sahad

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Gk Mohammad Emon · Accepted Answer · 2023-03-02 12:05:46Z

1

For my case , I'm using M1 chipped Mac OS. First upgrade your gradle distribution -

distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip

in gradle-wrapper.properties.

Then you might face an issue like that -

accessible: module java.base does not "opens java.io" to unnamed module @42760a00

if you face this please add a like in gradle.property.

org.gradle.jvmargs=-Xmx1536M --add-exports=java.base/sun.nio.ch=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-exports=jdk.unsupported/sun.misc=ALL-UNNAMED

Ref 1 and Ref 2

answered Mar 2, 2023 at 12:05

Gk Mohammad Emon

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Lugo · Accepted Answer · 2021-07-25 11:02:44Z

0

Try to uninstall java, restart android studio and run the application again. Grandle handled everything by itself.

answered Jul 25, 2021 at 11:02

Lugo

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Aron · Accepted Answer · 2021-09-03 10:35:03Z

0

Since Android Studio comes bundled with JDK, it may be a solution to downgrade (or upgrade?) your Android Studio version.

For example, if you are still using Flutter 1.x, I recommend using Android Studio up to 4.2.x. This requires no additional installations or configuration changes, whereas later versions cause all sorts of weird issues.

answered Sep 3, 2021 at 10:35

Aron

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Anshu Meena · Accepted Answer · 2022-02-23 04:13:09Z

0

i have the same issue i have java 17 installed in my system

after searching this on internet i found that if you downgrade your java from whatever to java 8 or java 11 then it's going to work.

i downgrade to java 11 and its works

answered Feb 23, 2022 at 4:13

Anshu Meena

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Shervin · Accepted Answer · 2024-04-27 06:44:43Z

0

Separately, I opened android module in Android Studio, then gradle started to build, then I opened the Flutter project again. it is ok

answered Apr 27, 2024 at 6:44

Shervin

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Ya Yura · Accepted Answer · 2024-11-20 16:32:11Z

0

I've just built in newly installed VS code and everything worked, did not ask anything, there were no errors. magic!

answered Nov 20, 2024 at 16:32

Ya Yura

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