title: Kotlin - Application project template - error main class not found
body: <p>I am using IntelliJ IDEA 2021.1 (Community Edition) - Build #IC-211.6693.111, built on April 6, 2021.
  I created a new kotlin project - project template(JVM): Application, built system: Gradle Kotlin,
  project JDK:1.8 version 1.8.0_281.
  In the “scr/main/kotlin” folder, I created a kotlin file with a simple code like &quot;fun main(){println(“Hi!”)}.
  When I tried to run the file(the build was ok), I got this error: “Could not find or load main class MyAppKt”.
  What did I do wrong?</p>