I keep getting the error "player is not a valid member of DataModel", can someone help?

I asked someone, and they sent me on the right track. Still haven't figured this out.

local Player = game.player.Character
local char = Player.Character or Player.CharacterAdded:Wait()
local Button = script.Parent.FireButton

function OnClicked()
	
	script.Parent:Destroy()
	print(Player.."Hit me D:")
wait(.5)


local FirePet = game.ReplicatedStorage.FirePet


local xPosition = char.Torso.Position.X
local yPosition = char.Torso.Position.Y
local zPosition = char.Torso.Position.Z

local function AddFirePet()
	local FirePetCopy = FirePet:Clone()
	FirePetCopy.Parent = char.Torso
	

	
wait(1)
FirePetCopy.Position = Vector3.new(xPosition,yPosition,zPosition)

	print("Reset Positions")
end
	
do AddFirePet()
	
end

end	 
Button.MouseButton1Click:connect(OnClicked)

WARNING! You are using a local script, meaning that whatever you write there, will only be seen by the current player (client)! You should use RemoteEvents to create a client-server connection and replicate it to the server!

Documentation on RemoteEvents

And when using a LocalScript to get the current player you do game.Players.LocalPlayer

Fixing your code would be like:

local Player = game.Players.LocalPlayer
local char = Player.Character or Player.CharacterAdded:Wait()
local Button = script.Parent.FireButton

function OnClicked()
	script.Parent:Destroy() -- This deletes the script's parent and it's children(including the script! Be careful!)
	print(Player.."Hit me D:")
	wait(.5)


	local FirePet = game.ReplicatedStorage.FirePet
	
	
	local xPosition = char.Torso.Position.X
	local yPosition = char.Torso.Position.Y
	local zPosition = char.Torso.Position.Z

	local function AddFirePet()
		local FirePetCopy = FirePet:Clone()
		FirePetCopy.Parent = char.Torso

		wait(1)
		FirePetCopy.Position = Vector3.new(xPosition,yPosition,zPosition)
		print("Reset Positions")
	end

	-- I removed "do", you do not use it to call functions!
	AddFirePet()
end

Button.MouseButton1Click:connect(OnClicked)