Solving Kotlin compile complain

So I was working with pulsar and come across this error while coding with

PulsarClient.builder()

Calls to static methods in Java interfaces are prohibited in JVM target 1.6. Recompile with ‘-jvm-target 1.8’

open your build.gradle.kts and append the following

tasks.withType<KotlinCompile> {
    kotlinOptions.jvmTarget = "1.8"
}

that should get you going (hopefully XD)