Gradle - FXMLoader can't find resources

I'm using javafx with gradle. I have a fxml file inside my com.example.myfxapp package called main.fxml but when i call

 FXMLLoader.load(getClass().getResource("main.fxml"));     

or

   FXMLLoader.load(getClass().getResource("/main.fxml"));

But FXMLoader unable to find my fxml file. Any ideas?