Error in important script

[remote sun]

So i have a huge script to basically to function the game mode and store the disconnections from the client and server's bugs and it also checks bindables and the settings but theres a error

sending the script rq

local GameCore = {}

-- Shared variables
local players = {}
local gameMode = "lobby"
local gameSettings = {
    maxPlayers = 10,
    matchDuration = 30,
    intermissionDuration = 10
}

-- Function to handle player connections and disconnections
function GameCore:PlayerConnected(player)
    table.insert(players, player)
    print("Player connected: " .. player.Name)
    local playerGui = player.PlayerGui
    local playerGuiElement = playerGui:WaitForChild("PlayerGuiElement")
    playerGuiElement.TextLabel.Text = "Welcome, " .. player.Name .. "!"
end

function GameCore:PlayerDisconnected(player)
    for i, p in ipairs(players) do
        if p == player then
            table.remove(players, i)
            print("Player disconnected: " .. player.Name)
            local playerGui = player.PlayerGui
            local playerGuiElement = playerGui:WaitForChild("PlayerGuiElement")
            playerGuiElement.TextLabel.Text = ""
        end
    end
end

-- Function to handle game mode changes
function GameCore:ChangeGameMode(newMode)
    gameMode = newMode
    print("Game mode changed to: " .. newMode)
    local gameModeUi = game.ReplicatedStorage:WaitForChild("GameModeUi")
    gameModeUi.TextLabel.Text = "Game mode: " .. gameMode
end

-- Function to handle game settings changes
function GameCore:ChangeGameSettings(newSettings)
    gameSettings = newSettings
    print("Game settings changed to:")
    for setting, value in pairs(newSettings) do
        print(setting .. ": " .. value)
    end
end

-- Return the GameCore module
return GameCore

-- ModuleScript: GameModeManager
local GameModeManager = {}
function GameModeManager:ChangeGameMode(newMode)
    local gameCore = require(game:GetService("ReplicatedStorage"):WaitForChild("GameCore"))
    gameCore:ChangeGameMode(newMode)
end

local playerDisconnectedEvent = Instance.new("BindableEvent")
playerDisconnectedEvent.Name = "PlayerDisconnected"
playerDisconnectedEvent.Parent = ReplicatedStorage```

part 2: ```-- Create a function to handle player connections and disconnections
local function onPlayerConnected(player)
GameCore:PlayerConnected(player)
end

-- Create a function to handle player disconnections
local function onPlayerDisconnected(player)
GameCore:PlayerDisconnected(player)
end

-- Connect the player connected and disconnected events to the GameCore module
game.Players.PlayerAdded:Connect(onPlayerConnected)
game.Players.PlayerRemoving:Connect(onPlayerDisconnected)

-- Create a function to handle game mode changes
local function onChangeGameMode()
local gameModeUi = game.ReplicatedStorage:WaitForChild("GameModeUi")
local newMode = gameModeUi.TextLabel.Text
local gameCore = require(game:GetService("ReplicatedStorage"):WaitForChild("GameCore"))
gameCore:ChangeGameMode(newMode)
end

-- Connect the game mode change event to the onChangeGameMode function
game.ReplicatedStorage:WaitForChild("GameModeUi").TextChanged:Connect(onChangeGameMode)

-- Create a function to handle game settings changes
local function onChangeGameSettings()
local newSettings = {
maxPlayers = game.ReplicatedStorage:WaitForChild("GameSettings").MaxPlayers.Value,
matchDuration = game.ReplicatedStorage:WaitForChild("GameSettings").MatchDuration.Value,
intermissionDuration = game.ReplicatedStorage:WaitForChild("GameSettings").IntermissionDuration.Value
}
local gameCore = require(game:GetService("ReplicatedStorage"):WaitForChild("GameCore"))
gameCore:ChangeGameSettings(newSettings)
end

-- Connect the game settings change event to the onChangeGameSettings function
game.ReplicatedStorage:WaitForChild("GameSettings").MaxPlayers.Changed:Connect(onChangeGameSettings)
game.ReplicatedStorage:WaitForChild("GameSettings").MatchDuration.Changed:Connect(onChangeGameSettings)
game.ReplicatedStorage:WaitForChild("GameSettings").IntermissionDuration.Changed:Connect(onChangeGameSettings)```

it doesnt say any errors in the last part

but it doesnt work