TakeDamage renders an error, how do i fix my script?

heya. i've got a problem with a sword script i've been working on. i'm trying to make the blade of the sword do damage when ANOTHER player touches it, not the one holding it.

whenever the sword hits something, this error appears:

22:36:53.119 - Players.peasantvonpeasant.Backpack.WoodenSword.DamageForSwords:8: attempt to index a nil value

22:36:53.120 - Stack Begin

22:36:53.120 - Script 'Players.peasantvonpeasant.Backpack.WoodenSword.DamageForSwords', Line 8

22:36:53.120 - Stack End

my script is:

local canattack = true

  

script.Parent.Blade.Touched:Connect(function(p)

  

if canattack == true then

if p:FindFirstAncestorWhichIsA("Model") then

if p.Parent:FindFirstChildWhichIsA("Humanoid") then

p:FindFirstChildWhichIsA("Humanoid"):TakeDamage(9)

wait(1)

canattack = true

end

end

end

end)

if something doesn't really make sense, please comment and i will explain. it's pretty late where i am right now, so i may have made some typos.

also, it'd help a lot if you could specify how to do what i am supposed to do, since as you probably guessed by the fact that i can't solve such a short, simple script - i am still very new to this.