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javascriptgradlekotlin
Emile Achadde
Emile Achadde

Reputation: 1815

Kotlin gradle Could not initialize class org.jetbrains.kotlin.gradle.internal.KotlinSourceSetProviderImplKt

I tried to use gradle for transpiling Kotlin to Js. When I run the example from https://www.codeflow.site/fr/article/kotlin-javascript I got the error : Could not initialize class org.jetbrains.kotlin.gradle.internal.KotlinSourceSetProviderImplKt which comes from line apply plugin: 'kotlin2js' of build.gradle.

I have no idea of what the missing class is and why kotlin2js is asking for it. Any suggestion ?

Upvotes: 87

Views: 112098

Answers (10)

Carlos Chaguendo
Carlos Chaguendo

Reputation: 3085

In my case this solves the problem:

buildscript {
    ext.kotlin_version = "1.3.72"
    repositories {
        google()
        jcenter()
        
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.0.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        
    }
}

Set ext.kotlin_version = "1.3.72" and $kotlin_version

Upvotes: 33

Liebster Kamerad
Liebster Kamerad

Reputation: 6219

Solved this issue by setting the latest Kotlin version (1.3.72) in build.gradle file.

buildscript {
ext {
    kotlinVersion = '1.4.20'
    springBootVersion = '2.0.4.RELEASE'
}
repositories {
    mavenCentral()
}
... 
}

Upvotes: 148

Mehul Pamale
Mehul Pamale

Reputation: 406

Simplest solution:

Go to file -> project structure (ctrl+shift+alt+s) -> suggestions -> accept all the suggestions.

To answer the OP's quetion, you just need to accept the one with the kotlin version

Upvotes: 6

SMBiggs
SMBiggs

Reputation: 11688

Yes, as many before have said, the problem is probably that you have a kotlin version mis-match. But how do you know what version of kotlin is installed?

To find out your version of kotlin: Settings -> Language & Frameworks -> Kotlin

picture of settings

Make sure that you change your kotlin version (in both build.gradle files!) to this exact number. In my case (above) it's 1.4.10

Good luck!

Upvotes: 30

Alexandru Topală
Alexandru Topală

Reputation: 329

In your build.gradle file if you hover over the classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" it will tell you what version of Kotlin you will have to use in the kotlinVersion variable at the top of the file, according to your SDK/plugins versions.

Upvotes: 1

Matthias Kuhn
Matthias Kuhn

Reputation: 170

In Android Studio: File -> Project Structure -> Variables

There edit the kotlin_version to e.g. 1.3.72

Gradle should resync automatically, otherwise resync manually

Upvotes: 16

AngelaG
AngelaG

Reputation: 725

update your Version in your gradle.properties file. eg) kotlinVersion=1.3.72

Upvotes: 8

StndFish
StndFish

Reputation: 137

I don't know if I can do the same as KP7984 said - to check the versions of the plugins of my Android Studio, not the ones of my OS. I use gradlew -v of my project instead of gradle -v and it works for me.

Upvotes: 1

Jim C
Jim C

Reputation: 4385

It seems it is a problem with different Ktlin verion as explained in Building Kotlin projects with Gradle sometimes fails with NoClassDefFoundError

Upvotes: 1

KP7984
KP7984

Reputation: 470

I just had the same issue. On windows, I checked the kotlin version from the command line with gradle -v and then adjusted the kotlin version in build.gradle of my project to match my version of gradle.

I hope this works for you too.

Upvotes: 36

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