Need help on line 19 ?

The problem is is that the character isn't loaded when the script executes, thus there is no char. What I suggest is to put this at the top of the script:

game.Players.LocalPlayer.CharacterAdded:connect(function(character)

that way, it will fire right when the character loads. This also can save some confusion because the variable passed into the function is the character that just spawned, so you can refer to that as your character.

Also, if there are some things under the character that are throwing errors, try using a character:WaitForChild("What you need") on the character so that it will guarantee that the object will be there.

Here is an example of how you can use it:

game.Players.LocalPlayer.CharacterAdded:connect(function(character)


---------None of this is really needed anymore because of this---------------

--local character = game.Players.LocalPlayer.character
--local character = game.Players.LocalPlayer.character
--local player = game:GetService("Players").LocalPlayer
--local found = game.Workspace:findFirstChild(player.Name)
--if found then
--print'character has loaded'
--else
--while not player.character do wait() end
--end



-----------THe Humanaoid might load after everything else as well
local human = character:FindFirstChild("Humanoid")

human.Changed:connect(function(death) -- error
if human.Health == 0 then -- error
local i = game.Lighting.Death:Clone()
local o = game.Lighting.Death:Clone()
local p = game.Lighting.Death:Clone()
local a = game.Lighting.Death:Clone()
local s = game.Lighting.Death:Clone()
local d = game.Lighting.Death:Clone()   
i.Parent = character.Torso
o.Parent = character:FindFirstChild("Right Arm")
p.Parent = character:FindFirstChild("Right Leg")
a.Parent = character:FindFirstChild("Left Arm")
s.Parent = character:FindFirstChild("Left Leg")
-- Limbs Disappear
character:FindFirstChild("Right Arm").Transparency = 1
character:FindFirstChild("Right Leg").Transparency = 1
character:FindFirstChild("Left Arm").Transparency = 1
character:FindFirstChild("Left Leg").Transparency = 1
character:FindFirstChild("Head").Transparency = 1
character:FindFirstChild("Torso").Transparnecy= 1 
-- Clothing Disappear
    if character:FindFirstChild("Pants") then
    character.Pants:Destroy()
    if character:FindFirstChild("Shirt") then
    character.Shirt:Destroy()
    if character:FindFirstChild("Hat") then
    character.Hat:Destroy()
    if character:FindFirstChild("Hat") then
    character.Hat:Destroy()
    if character:FindFirstChild("Hat") then
    character.Hat:Destroy()
                        end
                    end
                end
            end
        end
    end
end)

end)

At the moment when LocalScripts start executing, the Character hasn't yet loaded, so the property will be nil.

That is, you will be assigning nil to char in line 2.

Waiting until the Character loads should be done first. You can do that something like this:

repeat
    wait()
until player.Character

(I would suggest moving the definition of player to the top and defining char / character (You have unnecessarily two) to actually use the definition)

Your indentation is really bad. It should be meaningful, and actually reflect the grouping of statements. It makes code much easier to read.

Especially since the code you have doesn't work they way you would like it to, and indentation would reveal that.