[Fixed] Why does this table become nil when I never set it to nil?

So, I am trying to make a script that can make a spring constraint hook onto your arm and what your mouse is at. So far, I got this

local lassos = {}
local lasso = game.ReplicatedStorage.MakeLasso
local mouse = game.Players.LocalPlayer:GetMouse()
local gui = Instance.new('ScreenGui', game.Players.LocalPlayer.PlayerGui)
gui.Enabled = false

local function MakeButton(instance) --some UI to destroy constraints
	print(instance:GetFullName())
	local new = Instance.new('TextButton', gui)
	new.TextScaled = true
	new.TextWrapped = true
	new.Text = instance.Attachment1.Parent.Parent.Name..'.'..instance.Attachment1.Parent.Name
	new.Style = Enum.ButtonStyle.RobloxButtonDefault
	new.TextColor3 = Color3.new(1, 1, 1)
	
	new.MouseButton1Click:Connect(function()
		if instance.Attachment0 == nil then
			new:Destroy()
			return
		end
		instance.Attachment0:Destroy()
		instance.Attachment1:Destroy()
		instance:Destroy()
		new:Destroy()
	end)
end

do --makes gui
	local gc = Instance.new('UIGridLayout', gui)
	gc.CellPadding = UDim2.new(0, 10, 0, 10)
	gc.CellSize = UDim2.new(0, 100, 0, 50)
end
script.Parent.Parent.Activated:Connect(function(mouse)
	local mouse = game.Players.LocalPlayer:GetMouse()
	local plyr = script.Parent.Parent.Parent
	local hand = plyr:FindFirstChild('RightHand') or plyr:FindFirstChild('Right Arm')
	if mouse.Target and mouse.Target:IsA('BasePart') and hand then
		local a0 = hand
		local a1 = mouse.Target
		local lasso = lasso:InvokeServer(a0, a1, 'Create')
		if lassos == nil then lassos = {} return end
		for _, object in pairs(lasso) do
			table.insert(lassos, object)
		end
		MakeButton(lasso[1])
	end
end)

script.Parent.Parent.Unequipped:Connect(function()
	for _, object in pairs(lassos) do
		lasso:InvokeServer(object, '', 'Destroy')
	end
	lassos = {}
	for _, obj in pairs(gui:GetChildren()) do
		if obj:IsA('Frame') then
			obj:Destroy()
		end
	end
end)

local user = game:GetService('UserInputService')
local deb = false

user.InputBegan:Connect(function(key)
	local target = mouse.Target
	if not deb and key.KeyCode == Enum.KeyCode.T and user:GetFocusedTextBox() == nil and target ~= nil and target:IsA('BasePart') then
		deb = true
		if lassos == nil then lassos = {} deb = false return end
		for i, tie in pairs(lassos) do
			if tie:IsA('SpringConstraint') then
				print('s')
				local a0 = target
				if tie.Attachment1.Parent then
					lasso:InvokeServer(a0, tie.Attachment1.Parent, 'Create')
					tie.Attachment0:Destroy()
					tie.Attachment1:Destroy()
					tie:Destroy()
				end
			end
		end
		lassos = {}
		deb = false
	elseif key.KeyCode == Enum.KeyCode.F2 then
		gui.Enabled = not gui.Enabled
	end
end)

I know this is kinda bad remote event security, but I just want to play around with constraints.

I thought this would work, but when I run it, it errors Players.Player1.Backpack.Lasso.Handle.Lasso:42: bad argument #1 to 'pairs' (table expected, got nil). Nowhere in the script sets the table to nil. Also, I did if lassos == nil then lassos = {} end statements to see if that fixed it, but for some reason it does not. Have any ideas?