Inconsistent JVM-target compatibility detected for tasks 'compileDebugJavaWithJavac' (1.8) and 'compileDebugKotlin' (21).

android {
namespace "com.firstlogicmetalab.soulknob_customer"
compileSdkVersion 34
ndkVersion flutter.ndkVersion

compileOptions {
coreLibraryDesugaringEnabled true
sourceCompatibility JavaVersion.VERSION_21
targetCompatibility JavaVersion.VERSION_21
}

kotlinOptions {
jvmTarget = '21'
}

sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}

buildscript {
ext.kotlin_version = '2.0.20'
repositories {
google()
mavenCentral()
}

dependencies {
classpath 'com.android.tools.build:gradle:7.3.0'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath 'com.google.gms:google-services:4.3.15'
classpath 'com.google.firebase:firebase-crashlytics-gradle:2.8.1'
}
}