IntelliJ Plugin ClassNotFoundException

Action.java

public class MyAction extends AnAction {


   @Override 
	public void actionPerformed(AnActionEvent e) {
        try {
            String fileName = Objects.requireNonNull(e.getData(DataKeys.VIRTUAL_FILE)).getCanonicalPath();
            FileBasedConfigurationBuilder<FileBasedConfiguration> builderOrig = new FileBasedConfigurationBuilder<FileBasedConfiguration>(
                    PropertiesConfiguration.class).configure(new Parameters().properties().setFileName("test.properties"));
            PropertiesConfiguration config = (PropertiesConfiguration) builderOrig.getConfiguration(); // Class not found Exception "PropertiesConfiguration"
            System.out.println(config.getProperties("this.is.a.test"));
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
      
}

build.gradle

plugins {
	id 'org.jetbrains.intellij' version '0.4.8'
}

apply plugin: 'org.jetbrains.intellij'
apply plugin: 'java'
apply plugin: 'idea'

sourceCompatibility = javaVersion
targetCompatibility = javaTargetVersion

group 'de.group.id'
version '0.1'

tasks.withType(JavaCompile) { options.encoding = 'UTF-8' }

intellij {
	version ideaVersion
	type ideaType
	pluginName pluginName
}

repositories {
	mavenCentral()
	maven { url 'https://dl.bintray.com/jetbrains/intellij-plugin-service' }
}

dependencies {
	compileOnly 'org.projectlombok:lombok:1.18.8'
	annotationProcessor 'org.projectlombok:lombok:1.18.8'
	compile 'commons-beanutils:commons-beanutils:1.9.3'
	compile 'org.apache.commons:commons-configuration2:2.4'
}

Main.java

public class Main {

    public static void main(String[] args) throws ConfigurationException {
        FileBasedConfigurationBuilder<FileBasedConfiguration> builderOrig = new FileBasedConfigurationBuilder<FileBasedConfiguration>(
                PropertiesConfiguration.class).configure(new Parameters().properties().setFileName("test.properties"));
        PropertiesConfiguration config = (PropertiesConfiguration) builderOrig.getConfiguration(); // Works fine
        System.out.println(config.getProperties("this.is.a.test"));
    }

}