'Previously freed instance' After restarting the game and trying to update the score func

Question

EDIT TO CODE MADE SEE FOOTNOTE [FOOTNOTE]

Im Currently trying to work out how to make the game restart after players lives hit 0.
This ive managed to do. Game Over screen pops up and then i can hit restart.
The game then restarts From the beginning. Then i hit this issue once i either try to increase the score. or decrease life.

This is my current Restart button code

func _on_Restart_button_down():
    global.score = 0
    global.lives = 3
    get_tree().reload_current_scene()
    get_tree().paused = false

Im Having no issue with the scene reseting but this error only happens when i try to do the following/ IT also happens when i press the pause button:

func updatescore():
    Score.text = str(global.score)

func updatelife():
    Life.text = str(global.lives)
    if global.lives == 0:
        get_tree().paused = true
        PlayPause.hide()
        Overlay.show()
        GameOver.show()

The Above Updates the global score or life var which is nothing more than:

var score = 0
var lives = 3

The second error line is just this line here:

GUI.updatelife()

Ive searched around but im not sure how to fix this issue?
Do i need to free the GUI Scene? Then re add it?
Ive tried this but, But none of the methods Ive tried Have worked.

Basically. After i restart the game the vars should reset And should play the game again like you would expect. With score updating and so on. Any help would be appreciated Thank you

[FOOTNOTE]
I Changed The restart button to this:

func _on_Restart_button_down():
    global.score = 0
    global.lives = 3
    get_tree().reload_current_scene()
    queue_free()
    global.restart("res://Scenes/GUI.tscn")

Then in my global:

onready var currentScene = get_node("/root/Main/GUI")

func restart(scenePath):
    #Free Scene
    currentScene.queue_free()
    #Instance Scene
    var addScene = load(scenePath)
    currentScene = addScene.instance()
    get_tree().get_root().add_child(currentScene) 
    get_tree().paused = false

This Adds a GUI over the top which means the pause button now works BUT it still wont update the score. It hits me with an error.

How can i remove the GUI From The Tree so when its re instanced it works?

Comments

Sounds like if you are setting Score.text on a deleted node. Make sure it exists at the point of calling the function.

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Can u please show me how you solved this Archtects.
I also have same problem in my project.Please.

Answer 1

It looks like Score and Life point to nodes that exist in the scene you're reloading, hence end up pointing to freed nodes after you reload your scene. I assume you set them via onready or within your _ready function. Try setting them again after reload, or access the nodes they point to via their node path each time (e.g. via $...), and the problem should go away.

Comments

Thank you, This makes so much sense, and kind of annoyed by my self that i didn't think about it!
Cheeers