Gradle OpenJFx11 : Error - JavaFx runtime components are missing

Question

Context: Trying to create a simple JavaFx application using OpenJdK11 & OpenJFx11

Issue: I get an error as below when I try to execute

Error: JavaFX runtime components are missing, and are required to run this application

I referred to Link1 & Link2 . I also referred to 'Getting started with JavaFx11' - Link As suggested in the getting started when I try specifying the run configuration I get a message as shown

run' in 'build' cannot be applied to '(groovy.lang.Closure)' less... (Ctrl+F1) 

Hope the issue faced is clear & await inputs as to where I am going wrong. (using IntelliJ ide)

Code:

Main -

public class Main extends Application {
@Override
public void start(Stage primaryStage) throws Exception {
    Parent root = FXMLLoader.load(getClass().getResource("/Sample.fxml"));
    StackPane stackPane = new StackPane(root);
    Scene scene = new Scene(stackPane);
    primaryStage.initStyle(StageStyle.TRANSPARENT);
    primaryStage.setScene(scene);
    primaryStage.show();

}
}

FXML-

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.layout.AnchorPane?>
<AnchorPane xmlns="http://javafx.com/javafx"
            xmlns:fx="http://javafx.com/fxml"
            fx:controller="Controller"
            prefHeight="400.0" prefWidth="600.0">

</AnchorPane>

Gradle-

plugins {
id 'java'
}

group 'testJavaFx'
version '1.0-SNAPSHOT'

sourceCompatibility = JavaVersion.VERSION_11

repositories {
    mavenCentral()
}

dependencies {
    compile 'org.openjfx:javafx-base:11:win'
    compile 'org.openjfx:javafx-controls:11:win'
    compile 'org.openjfx:javafx-fxml:11:win'
    compile 'org.openjfx:javafx-graphics:11:win'

    testCompile group: 'junit', name: 'junit', version: '4.12'
}

compileJava {
    doFirst {
        options.compilerArgs = [
                '--module-path', classpath.asPath,
                '--add-modules', 'javafx.controls'
        ]
    }
}

run {
    doFirst {
        jvmArgs = [
                '--module-path', classpath.asPath,
                '--add-modules', 'javafx.controls'
        ]
    }
}

Solution

I have found a solution from the official repository of JavaFX: https://github.com/javafxports/openjdk-jfx/issues/236

There are some easy workarounds though. For example, you can have a main class that is not extending javafx.application.Application, and that main class can then call the main(String[]) method on your real main class (that way, the Java launcher doesn't require the javafx libraries to be available as named modules).

I created a java artifacts with Intellij IDEA and it works (without using gradle).