error in read json file

Godot Version

4.2

Question

I’m making a quiz game. I have followed the tutorial on youtube. The problem is from this code
var file = File.new()
var json_data = parse_json(text)
This code is unreadable or error in my godot.
And this is for the whole code
extending the Control

@onready var DisplayText = $VBoxContainer/DisplayText
@onready var ListItem = $VBoxContainer/ItemList
@onready var ButtonFinish = $VBoxContainer/ButtonFinish

var items : Array = read_json_file(“res://dialog/Kuis/quizgame.json”)
var item : Dictionary
var index_item : int = 0

var true : float = 0

func _ready():
refresh_scene()

func refresh_scene():
if index_item >= items.size():
show_result()
else
show_questions()

func show_results():
ListItem.hide()
Done button.show()
var value = round(correct / item.size() * 100)
var greeting
if score >= 60:
greeting = “Congratulations”
else
greeting = “Oh no”
DisplayText.text = “{salam} Your score is {score}“. format({”greeting": greeting, ‘score’: score})

func show_question():
ListItem.show()
Done button.hide()
ListItem.clear()
item = item[index_item]
DisplayText.text = item.question
var choice = item.choice
for the options in the selection:
ListItem.add_item(option)

func read_json_file(filename):
var file = File.new()
file.open(filename, file.READ)
var text = file.get_as_text()
var json_data = parse_json(text)
file.close()
return json_data

func _on_item_list_item_selected(index):
if index == item.correctOptionIndex:
correct += 1
index_item += 1
refresh_scene()

func _on_finish_button_pressed():
TransitionScreen.transition()
wait for TransitionScreen.on_transition_finished
get_tree().change_scene_to_file(“res://scene/scene_1.tscn”)

What error did it showing?