why does the output say that "Character" is a nil value?

the script that i'm making is supposed to clone each body part, however before even starting to code this script the output says "attempt to index local 'Character' (a nil value)"

what is wrong with this script? i've tried multiple solutions with no outcome.

-- transform script

local player = game.Players.LocalPlayer
local mouse = script.Parent.Parent:GetMouse()
local Character = player.Character 

local transformed = Instance.new("BoolValue")
transformed.Name = "Transformed"
transformed.Value = false
transformed.Parent = script

-- body parts

local LUarm = Character.LeftUpperArm
local LLarm = Character.LeftLowerArm
local Lhand = Character.LeftHand
local RUarm = Character.RightUpperArm
local RLarm = Character.RightLowerArm
local Rhand = Character.RightHand
local utorso = Character.UpperTorso
local ltorso = Character.LowerTorso
local LUleg = Character.LeftUpperLeg
local LLleg = Character.LeftLowerLeg
local Lfoot = Character.LeftFoot
local RUleg = Character.RightUpperLeg
local RLleg = Character.RightLowerLeg
local Rfoot = Character.RightFoot
local head = Character.Head
local hroot = Character.HumanoidRootPart

local CLUarm = Character.LeftUpperArm:Clone()
local CLLarm = Character.LeftLowerArm:Clone()
local CLhand = Character.LeftHand:Clone()
local CRUarm = Character.RightUpperArm:Clone()
local CRLarm = Character.RightLowerArm:Clone()
local CRhand = Character.RightHand:Clone()
local Cutorso = Character.UpperTorso:Clone()
local Cltorso = Character.LowerTorso:Clone()
local CLUleg = Character.LeftUpperLeg:Clone()
local CLLleg = Character.LeftLowerLeg:Clone()
local CLfoot = Character.LeftFoot:Clone()
local CRUleg = Character.RightUpperLeg:Clone()
local CRLleg = Character.RightLowerLeg:Clone()
local CRfoot = Character.RightFoot:Clone()
local Chead = Character.Head:Clone()
local Chroot = Character.HumanoidRootPart:Clone()

The character hasn't loaded in yet, therefore your attempt at addressing the player's character comes out as nil. To fix this, simply add a wait at the beginning of your script, or better yet utilize the CharacterAdded event to run your code once the character actually loads in.

This may seem improper to do, but im going to assume that you have a local script, inside StarterGui..

I would add a wait() before getting Character's body parts.

Hope this works!

I think you are using a server-side Script instead of a local script. It will say that when you are trying to access player-specific objects with a server-script. Try using a LocalScript instead, and I hope it will be fine.

If you are already using a LocalScript and it still does not work, try using :Wait() because the character may have not been loaded.