JavaFX apllication main load method generates null input stream

Question

im trying to run the main page of the api and the inputstream in the fxmloader.load() method so i cant start the application. I think myabe is because im getting the name of the resource not right.

The error stackstrace that gives me is the following:

Exception in Application start method
Exception in thread "main" java.lang.RuntimeException: Exception in Application start method
    at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
    at java.base/java.lang.Thread.run(Thread.java:831)
Caused by: java.lang.NullPointerException: inputStream is null.
Caused by: java.lang.NullPointerException: inputStream is null.

    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2562)
    at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2532)
    at com.example.demo3.ui.ApplicationJFX.start(ApplicationJFX.java:25)
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
    at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
    at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
    at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
    at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
    ... 1 more

> Task :Demo3Application.main() FAILED

This is the ApllicationJFX class that i am implementig to run the app:

package com.example.demo3.ui;


import com.example.demo3.Demo3Application;
import com.example.demo3.ui.controllers.MainController;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class ApplicationJFX extends Application {

    private Parent root;

    @Override
    public void init() throws Exception {

    }

    @Override
    public void start(Stage primaryStage) throws Exception{
        FXMLLoader fxmlLoader = new FXMLLoader();
        fxmlLoader.setControllerFactory(Demo3Application.getContext()::getBean);
        root = fxmlLoader.load(MainController.class.getResourceAsStream("Main.fxml"));
        primaryStage.setScene(new Scene(root));
        primaryStage.show();
    }

    @Override
    public void stop() {

        Demo3Application.getContext().close();
    }
}

This is my project structure:

The MainController class is located in java.com.example.demo3.ui.controllers.MainController and the Mainf.fxml file is located in resources.com.example.demo3.ui.controllers I have already tried:

root = fxmlLoader.load(MainController.class.getResourceAsStream("../Main.fxml"));

root = fxmlLoader.load(MainController.class.getResourceAsStream("../resoureces/com/example/demo3/ui/controllers/Main.fxml"));

fxmlLoader.load(MainController.class.getResourceAsStream("classpath:../resoureces/com/example/demo3/ui/controllers/Main.fxml"));

JavaFX apllication main load method generates null input stream

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