Exception

GRAVE: Servlet.service() for servlet [default] in context with path [/TestingSimpleMail] threw exception [java.lang.RuntimeException: java.lang.IllegalArgumentException: Subject not defined for email template : forgetPassword] with root cause
java.lang.IllegalArgumentException: Subject not defined for email template : forgetPassword

MeuController.java

public void withTemplate() {
	result.include("msg", "Enviando email com template!");

	Email email = this.templates.template("forgetPassword").to("JF",
			"linyatis@gmail.com");

	try {
		email.setSubject("Teste");
		mailer.asyncSend(email);
		
	} catch (EmailException e) {
		e.printStackTrace();
	}
}