Failed to call field 'insert' (a nil value). How can I fix this?

for i = 1,5 do
		but = Instance.new("TextButton",scr)
		but.Text = ""
		but.TextScaled = true
		but.Size = txt.Size
		but.Position = UDim2.new(1,0,1 - txt.Size.Y.Scale * (i + 1),0)
		but.Style = Enum.ButtonStyle.RobloxRoundDropdownButton
		table.insert(allbuttons,but)
end

idk what this is?

I named a variable "table" rip