User's name not showing in multiplayer godot waiting room - game-development

Question

so i was following a multiplayer godot tutorial on YouTube by ruyuse everything worked well (the server) until i got to the waiting room which is supposed to show the names of players joined, from this to this but when i try mine the lobby is the same but the waiting room ends up like this i know there is something of but its my first time making a multiplayer game so pls help.
This is my server side:
server.gd
func _ready():
start_server()
func start_server():
network.create_server(port, max_players)
get_tree().set_network_peer(network)
network.connect("peer_connected", self, "_player_connected")
network.connect("peer_disconnected", self, "_player_disconnected")
print("server started")
func _player_connected(player_id):
print("Player: " + str(player_id) + " Connected")
func _player_disconnected(player_id):
print("Player: " + str(player_id) + " Disconnected")
remote func send_player_info(id, player_data):
players[id] = player_data
rset("players", players)
rpc("update_waiting_room")
The client:
server.gd:
extends Node
const DEFAULT_IP = "127.0.0.1"
const DEFAULT_PORT = 3234
var network = NetworkedMultiplayerENet.new()
var selected_IP
var selected_port
var local_player_id = 0
sync var players = {}
sync var player_data = {}
func ready():
get_tree().connect("network_peer_connected", self,"_player_connected")
get_tree().connect("network_peer_disconnected", self,"_player_disconnected")
get_tree().connect("connection_failed", self,"_connected_fail")
get_tree().connect("server_disconnected", self,"_server_disconnected")
func _connect_to_server():
get_tree().connect("connected_to_server", self, "_connected_ok")
network.create_client(selected_IP, selected_port)
get_tree().set_network_peer(network)
func _player_connected(id):
print("player: " + str(id) + "Connected")
func _player_disconnected(id):
print("player: " + str(id) + "Disconnected")
func _connected_ok():
print("successfully connected to server")
register_player()
rpc_id(1, "send_player_info", local_player_id, player_data)
func _connected_fail():
print("failed to connect")
func _server_disconnected():
print("server disconnected")
func register_player():
local_player_id = get_tree().get_network_unique_id()
player_data = Save.save_data
players[local_player_id] = player_data
sync func update_waiting_room():
get_tree().call_group("WaitingRoom", "refresh_players", players)
lobby.gd:
extends Control
onready var player_name = $CenterContainer/VBoxContainer/GridContainer/NameTextBox
onready var selected_IP = $CenterContainer/VBoxContainer/GridContainer/IPTextBox
onready var selected_port = $CenterContainer/VBoxContainer/GridContainer/PortTextBox
onready var waiting_room = $WaitingRoom
onready var ready_btn = $WaitingRoom/CenterContainer/VBoxContainer/ReadyButton
func _ready():
player_name.text = Save.save_data["Player_name"]
selected_IP.text = (Server.DEFAULT_IP)
selected_port.text = str(Server.DEFAULT_PORT)
func _on_Join_button_pressed():
Server.selected_IP = selected_IP.text
Server.selected_port = int(selected_port.text)
Server._connect_to_server()
show_waiting_room()
func _on_NameTextBox_text_changed(new_text):
Save.save_data["Player_name"] = player_name.text
Save.save_game()
func show_waiting_room():
waiting_room.popup_centered()
func _on_ReadyButton_pressed():
ready_btn.disabled = true
waiting_room.gd:
extends Popup
onready var player_list = $CenterContainer/VBoxContainer/ItemList
func _ready():
player_list.clear()
func refresh_players(players):
player_list.clear()
for player_id in players:
var player = players[player_id]["Player_name"]
player_list.add_item(player, null, false)
save.gd:
var save_data = {}
func _ready():
save_data = get_data()
func get_data():
var file = File.new()
if not file.file_exists(SAVEGAME):
save_data = {"Player_name": "Unnamed"}
save_game()
file.open(SAVEGAME, File.READ)
var content = file.get_as_text()
var data = parse_json(content)
save_data = data
file.close()
return(data)
func save_game():
var save_game = File.new()
save_game.open(SAVEGAME, File.WRITE)
save_game.store_line(to_json(save_data))
and these are the errors i get on the server side (i realy don"t know what they mean)
I really hope this is not to long of a question because i really need help.
Thank you for reading.
sorry for the typos