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

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()
}
... 
}