Pfthb

I have an issue with my java app regarding below method:

private void clearFields() 
this.clientComboBox.getSelectionModel().clearSelection();
this.segmentComboBox.getSelectionModel().clearSelection();
this.releaseDatePicker.getEditor().clear();
this.titleTextField.clear();
this.priceTextField.clear();
this.basepriceTextField.clear();
this.descTextArea.clear();
this.vinTextField.clear();
this.daysSlider.setValue(1);

When I try to add a Car there is no issue, program runs perfectly.
But when I try to click edit option , after saving changes, each column for edited row set as empty, what I do wrong?

link to my repo: https://github.com/tomekcm4/wypozyczalnia.git

apparently something is wrong with this part:

this.editColumn.setCellFactory(param -> new TableCell<CarFx, CarFx>() 
 Button button = createButton("/icons/edit.png");

 @Override
 protected void updateItem(CarFx item, boolean empty) 
 super.updateItem(item, empty);

 if (empty) 
 setGraphic(null);
 return;
 

 if (!empty) 
 setGraphic(button);
 button.setOnAction(event -> 
 FXMLLoader loader = FxmlUtils.getLoader("/fxml/AddCar.fxml");
 Scene scene = null;
 try 
 scene = new Scene(loader.load());
 catch (IOException e) 
 DialogsUtils.errorDialog(e.getMessage());
 
 CarController controller = loader.getController();
 controller.getCarModel().setCarFxObjectProperty(item);
 controller.bindings();

 Stage stage = new Stage();
 stage.setScene(scene);
 stage.initModality(Modality.APPLICATION_MODAL);
 stage.showAndWait();
 );
 
 
 );

}

save button looks like this:

public void addCarOnAction() 
 try 
 this.carModel.saveCarInDataBase();

 clearFields();




 catch (ApplicationException e) 
 DialogsUtils.errorDialog(e.getMessage());