Why does this script error out?

I do not understand why it errors out when i do this i even tried player.Backpack instead of player.Character. Can someone help me

local ClassicSword = game.ReplicatedStorage.ClassicSword script.Parent.MouseButton1Click:Connect(function(player) local ClassicClone = ClassicSword:Clone() ClassicClone.Parent = player.Character end)

let me help u

1. put ur sword in ReplicatedStorage

2. create a RemoteEvent in ReplicatedStorage & name it "GiveSword"

3. create a script in ServerScriptService & add the code below

local swordEvent = game.ReplicatedStorage.GiveSword
swordEvent.OnServerEvent:Connect(function(plr)
	local ClassicClone = game.ReplicatedStorage.ClassicSword:Clone()
	ClassicClone.Parent = plr.Backpack
end)

now create a local script under ur sword giver button (where u had ur original code) & add the code below

local swordEvent = game.ReplicatedStorage.GiveSword
script.Parent.MouseButton1Click:Connect(function()
	swordEvent:FireServer()
end)

--Script
local ClassicSword=game.ReplicatedStorage.ClassicSword
local player=script:FindFirstAncestorOfClass"Player"
script.Parent.MouseButton1Click:Connect(function() 
ClassicSword:Clone().Parent = player.Backpack
 end)