Weird Error on using MainLoop.NOTIFICATION_WM_QUIT_REQUEST

Question

This Error is coming when I am using MainLoop.NOTIFICATIONWMQUIT_REQUEST.

Image

My Code-

extends Node

var save_filename = "user://save_game.save"

func _ready():
    load_game()

func save_game():
    var save_file = File.new()
    save_file.open(save_filename,File.WRITE)
    var saved_nodes = get_tree().get_nodes_in_group("Saved")

    for node in saved_nodes:
        if node.filename.empty():
            break

        var node_details = node.get_save_stats()
        save_file.store_line(to_json(node_details))

    save_file.close()

  func _notification(what):
    if what == MainLoop.NOTIFICATION_WM_QUIT_REQUEST or what == MainLoop.NOTIFICATION_WM_GO_BACK_REQUEST:
        save_game()

func load_game():

    var save_file = File.new()
    if not save_file.file_exists(save_filename):
        return

    var saved_nodes = get_tree().get_nodes_in_group("Saved")

    for node in saved_nodes:
        node.queue_free()

    save_file.open(save_filename,File.READ)
    while save_file.get_position() < save_file.get_len():
        var node_data = parse_json(save_file.get_line())
        var new_obj = load(node_data.filename).instance()
        get_node(node_data.parent).call_deferred('add_child',new_obj)
        new_obj.load_save_stats(node_data)

Answer 1

The screenshot you posted shows there is a typo in your code :)

Comments

Actually yeah and then i also restarted the godot editor