Kotlin gradle Could not initialize class class org.jetbrains.kotlin.gradle.internal.KotlinSourceSetProviderImplKt
JavascriptGradleKotlinJavascript Problem Overview
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 ?
Javascript Solutions
Solution 1 - Javascript
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()
}
...
}
Solution 2 - Javascript
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.
Solution 3 - Javascript
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
$kotlin_version
Solution 4 - Javascript
Yes, as many before have said, the problem is probably that you have a kotlin version mis-match. But how do you know what version of kotlin is installed?
To find out your version of kotlin: Settings -> Language & Frameworks -> Kotlin
Make sure that you change your kotlin version (in both build.gradle files!) to this exact number. In my case (above) it's 1.4.10
Good luck!
Solution 5 - Javascript
In Android Studio: File -> Project Structure -> Variables
There edit the kotlin_version to e.g. 1.3.72
Gradle should resync automatically, otherwise resync manually
Solution 6 - Javascript
update your Version in your gradle.properties file. eg) kotlinVersion=1.3.72
Solution 7 - Javascript
Simplest solution:
Go to file -> project structure (ctrl+shift+alt+s) -> suggestions -> accept all the suggestions.
To answer the OP's quetion, you just need to accept the one with the kotlin version
Solution 8 - Javascript
It seems it is a problem with different Ktlin verion as explained in https://stackoverflow.com/questions/46648318/building-kotlin-projects-with-gradle-sometimes-fails-with-noclassdeffounderror
Solution 9 - Javascript
I don't know if I can do the same as KP7984 said - to check the versions of the plugins of my Android Studio, not the ones of my OS. I use gradlew -v of my project instead of gradle -v and it works for me.
Solution 10 - Javascript
In your build.gradle file if you hover over the classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$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.