Unable To Cast Value To Object

[WindyTundra]

This doesnt usually happen but whenever the Cool1 RemoteEvent goes off it gives me the error Unable to cast value to object

–Heres The Script

local DataStoreService = game:GetService("DataStoreService")
local DataStore = DataStoreService:GetDataStore("Currency")

local function Setup(player)
	local playerId = player.UserId

	local LeaderStats = Instance.new("Folder")
	LeaderStats.Name = "leaderstats"
	LeaderStats.Parent = player

	local cash = Instance.new("IntValue")
	cash.Name = "cash"
	cash.Parent = LeaderStats
	

	local function updateCash(amount)
		cash.Value += amount
		game.ReplicatedStorage.Cool1:FireClient(amount)
	end


	local data
	local success, errorMsg
	for i = 1, 5 do
		success, errorMsg = pcall(function()
			data = DataStore:GetAsync("player_" .. player.UserId)
		end)
		if success then
			cash.Value = data or 0
			updateCash(cash.Value)
			break
		else
			warn(errorMsg)
		end
	end
	
	

	game.ReplicatedStorage.Option1_CashSend.Event:Connect(function() updateCash(10) end)
	game.ReplicatedStorage.Option2_CashSend.Event:Connect(function() updateCash(15) end)
	game.ReplicatedStorage.Option3_CashSend.Event:Connect(function() updateCash(25) end)
	game.ReplicatedStorage.Option4_CashSend.Event:Connect(function() updateCash(15) end)

	if player:FindFirstChild("PlayerGui") and player.PlayerGui:FindFirstChild("Currency") then
		player.PlayerGui.Currency.TextLabel.Text = tostring(cash.Value)
	end
end

local function Set(player)
	local success, errorMsg
	for i = 1, 5 do
		success, errorMsg = pcall(function()
			DataStore:SetAsync("player_" .. player.UserId, player:WaitForChild("leaderstats").cash.Value)
		end)
		if success then
			print("Success")
			break
		else
			warn(errorMsg)
		end
	end
end

game.Players.PlayerAdded:Connect(Setup)
game.Players.PlayerRemoving:Connect(Set)

[TheManInCity (Slyn)]

@WindyTundra

game.ReplicatedStorage.Cool1:FireClient(amount)

FireClient has a player arg pass in the player that you want to fire to.

RemoteEvent:FireClient(player, ...any)