Parent unable to be assigned javafx fxmlloader

Question

My program is supposed to run my SignIn.fxml on initial run, with the controller named LoginController. However when I run the usual code:

public void showLoginScreen() {
    try {
      FXMLLoader loader = new FXMLLoader(
              getClass().getResource("SignIn.fxml"));
      Parent root = (Parent) loader.load(getClass().getResource("SignIn.fxml"));
       scene = new Scene(root);
      LoginController.initManager(this);
    }catch (IOException ex) {
      Logger.getLogger(LoginManager.class.getName()).log(Level.SEVERE, null, ex);
    }
  }

I get an exception stating

javafx.scene.Scene cannot be cast to javafx.scene.Parent

I cannot understand this, as it has worked for me in past projects.

I have the scene set as a variable in the controller class.

Answer 1

I have checked my FXML file and found the cause of my problem is a conflict in my fxml file having a scene and the dynamically created scene on my controller itself.