Appears when trying to sort by expansion for the first time

Message: Interface\AddOns\BetterWardrobe\SortingFunctions.lua:305: attempt to compare number with nil
Time: Thu Sep 3 08:51:36 2020
Count: 1
Stack: Interface\AddOns\BetterWardrobe\SortingFunctions.lua:305: attempt to compare number with nil
[string "=[C]"]: ?
[string "@interface\AddOns\BetterWardrobe\SortingFunctions.lua"]:305: in function <Interface\AddOns\BetterWardrobe\SortingFunctions.lua:295>
[string "=[C]"]: in function sort' [string "@Interface\AddOns\BetterWardrobe\SortingFunctions.lua"]:295: in function ?'
[string "@interface\AddOns\BetterWardrobe\SortingFunctions.lua"]:525: in function <Interface\AddOns\BetterWardrobe\SortingFunctions.lua:520>
[string "=[C]"]: in function SortVisuals' [string "@Interface\AddOns\BetterWardrobe\UI.lua"]:98: in function func'
[string "@interface\FrameXML\UIDropDownMenu.lua"]:895: in function `UIDropDownMenuButton_OnClick'
[string ":OnClick"]:1: in function <[string ":OnClick"]:1>

Locals: