[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?