JavaFX构建的工件不会切换场景

Question

当我通过IDE（IntelliJ）运行它时，我的应用程序工作正常但我在运行构建的工件时遇到问题。场景不会像在IDE中那样改变。此问题仅影响我目前拥有的5个场景中的1个。问题在于ViewCustomers场景。

初始场景的控制器类的相关部分。

// $(document).ready( main() );
   $(document).ready( main );

编辑：从命令提示符运行时出现异常

// This one works
@FXML
public void viewBranches() throws IOException {
    stage=(Stage) menuBar.getScene().getWindow();
    Parent root = FXMLLoader.load(getClass().getResource("ViewBranches.fxml"));
    Scene scene = new Scene(root, 800, 500);
    stage.setTitle("Banking - Branches");
    stage.setScene(scene); 
    stage.show();
}

// This one doesn't work
@FXML
public void viewCustomers()throws IOException{
    DecisionBox.oneOption("Title", "Some text."); //Serves as a confirmation that the method runs
    stage=(Stage) menuBar.getScene().getWindow();
    Parent root = FXMLLoader.load(getClass().getResource("ViewCustomers.fxml"));
    Scene scene = new Scene(root, 800, 500);
    stage.setTitle("Banking - Customers");
    stage.setScene(scene); 
    stage.show();
}