Kotlin compile "ERROR: The Android Gradle plugin supports only Kotlin Gradle plugin version 1.3.0 and higher." but no kotlin_version in build.gradle?

Define your ext.kotlin_version

Your project level build.gradle should look like this.

buildscript {
    ext.kotlin_version = '1.2.51'
    ext.android_plugin_version = '3.2.1'
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:$android_plugin_version"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

Change

org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version

instead of

org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version

I faced this problem too and I fixed it by doing the following:

• In project level build.gradle, I have ext.kotlin_version = '1.3.10'

buildscript {
    ext.kotlin_version = '1.3.10'
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

ext {
    roomVersion = '1.0.0'
    archLifecycleVersion = '1.1.0'
}

• Then in app level build.gradle, I updated my dependencies to have this: implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"

I built, and everything worked fine again.