Interface error

[Cool20grand]

I get this issue and have for about a month now.
Message: Interface\AddOns\ls_UI\modules\tooltips\tooltips.lua:757: hooksecurefunc(): SetAuctionItem is not a function
Time: Fri Jan 17 14:32:13 2020
Count: 1
Stack: Interface\AddOns\ls_UI\modules\tooltips\tooltips.lua:757: hooksecurefunc(): SetAuctionItem is not a function
[string "=[C]"]: ?
[string "@interface\AddOns\ls_UI\modules\tooltips\tooltips.lua"]:757: in function <Interface\AddOns\ls_UI\modules\tooltips\tooltips.lua:710>
[string "=[C]"]: ?
[string "@interface\AddOns\ls_UI\core\core.lua"]:83: in function Call' [string "@Interface\AddOns\ls_UI\core\core.lua"]:106: in function InitModules'
[string "@interface\AddOns\ls_UI\init.lua"]:271: in function `func'
[string "@interface\AddOns\ls_UI\core\core.lua"]:38: in function <Interface\AddOns\ls_UI\core\core.lua:36>

Locals:
I have no clue on programing. I have tried uninstalling andre installing the IS_UI but nothing has worked. I really love it and would hate to have to stop using it. What can I do?