HumanoidRootPart is not a valid member of Model?

there is the script: , so in roblox studio i can talk with NPC with clicking button but in-game i saw a error error: --HumanoidRootPart is not a valid member of Model Stack Begin Script 'Players.FuddziezYT.PlayerGui in StarterGui.NPCText.Changeit', Line 14 Stack end

local UIS = game:GetService("UserInputService")

local Template = script.Parent:WaitForChild("Template")
local E = script.Parent.Parent:WaitForChild("EThing"):WaitForChild("E")

local VarHolder
local Text
local CurrentTrigger
local NPC
local db
local abletochange = true
local StoredValues = {}
game.Players.LocalPlayer.Character.HumanoidRootPart.Touched:Connect(function(o)
	if(o.Name=="TriggerBlock")then
		CurrentTrigger = o.NPCTitle.Value
		E.Visible = true
		E.Parent.Adornee = o
		NPC = o.Parent.NPC
	end
end)

game.Players.LocalPlayer.Character.HumanoidRootPart.TouchEnded:Connect(function(o)
	if(o.Name=="TriggerBlock")then
		CurrentTrigger = nil
		E.Visible = false
		E.Parent.Adornee = nil
		NPC = nil
	end
end)

UIS.InputBegan:Connect(function(inputObject, gameProcessedEvent)
	if(inputObject.KeyCode==Enum.KeyCode.E)and(not(db))then
		if(CurrentTrigger)then
			SetNewNpc()
		end
	end
end)

function SetNewNpc()
	if(abletochange)then
		VarHolder = NPC.Parent.TriggerBlock
		TextValue = VarHolder.Text
		Text = TextValue.Value
		SetNewTextBox()
	end
end

function SetNewTextBox()
	if(not(db))then
		db = true
		DisableMove()
		local TextBox = Template:Clone()
				TextBox.Parent = script.Parent
				TextBox.Text = ""
				TextBox.Size = UDim2.new(0,500,0,100)
				TextBox.Position = UDim2.new(0.5,-250,1,-150)
				TextBox.Visible = true
		for i=1,string.len(Text) do
			TextBox.Text = string.sub(Text, 1, i)
			wait(0.02)
		end
		UIS.InputBegan:Wait()
		TextBox:Destroy()
		if(TextValue:FindFirstChildOfClass("StringValue"))then
			VarHolder = TextValue
			TextValue = VarHolder.Text
			Text = TextValue.Value
			abletochange = false
			db = false
			SetNewTextBox()
		else
			EnableMove()
			wait(1)
			db = false
			abletochange = true
		end
	end
end

function DisableMove()
	if(game.Players.LocalPlayer.Character.Humanoid.WalkSpeed~=0)then
		StoredValues = {game.Players.LocalPlayer.Character.Humanoid.WalkSpeed,game.Players.LocalPlayer.Character.Humanoid.JumpPower}
		game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = 0
		game.Players.LocalPlayer.Character.Humanoid.JumpPower = 0
	end
end

function EnableMove()
	game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = StoredValues[1]
	game.Players.LocalPlayer.Character.Humanoid.JumpPower = StoredValues[2]
end

Did you check for the part?

script.Parent.Touched:Connect(function(Hit)
    local Root = Hit.Parent:FindFirstChild("HumanoidRootPart")
    -- Save it to a variable so you can use it later on quickly

    if Root then
        -- Do stuff with Root
    end
end)