Describe the bug
I got this when hovering over a Dalaran Hearthstone. Yesterday it popped up for something completely different, I believe it was Inscription but not 100% sure about that.

2x ...libs/LibFroznFunctions-1.0-4/LibFroznFunctions-1.0.lua:250: attempt to perform arithmetic on a nil value
[string "@TipTac/libs/LibFroznFunctions-1.0-4/LibFroznFunctions-1.0.lua"]:250: in function RefreshAnchorShoppingTooltips' [string "@TipTac/ttCore.lua"]:2206: in function <TipTac/ttCore.lua:2204> [string "=[C]"]: in function GameTooltip_ShowCompareItem'
[string "@SharedXML/Tooltip/TooltipDataRules.lua"]:161: in function func' [string "@SharedXML/Tooltip/TooltipDataHandler.lua"]:49: in function <SharedXML/Tooltip/TooltipDataHandler.lua:44> [string "@SharedXML/Tooltip/TooltipDataHandler.lua"]:71: in function <SharedXML/Tooltip/TooltipDataHandler.lua:67> [string "@SharedXML/Tooltip/TooltipDataHandler.lua"]:135: in function <SharedXML/Tooltip/TooltipDataHandler.lua:134> [string "@SharedXML/Tooltip/TooltipDataHandler.lua"]:278: in function <SharedXML/Tooltip/TooltipDataHandler.lua:236> [string "=[C]"]: in function securecallfunction'
[string "@SharedXML/Tooltip/TooltipDataHandler.lua"]:233: in function <SharedXML/Tooltip/TooltipDataHandler.lua:232>
[string "=(tail call)"]: ?
[string "=[C]"]: ?
[string "=[C]"]: in function SetAction' [string "@FrameXML/ActionButton.lua"]:906: in function SetTooltip'
[string "@FrameXML/ActionButton.lua"]:1185: in function <FrameXML/ActionButton.lua:1180>
[string "=[C]"]: ?
[string "=[C]"]: ?
[string "=[C]"]: ?
[string "@FrameXML/SecureHandlers.lua"]:266: in function <FrameXML/SecureHandlers.lua:263>
[string "=[C]"]: ?
[string "@FrameXML/SecureHandlers.lua"]:322: in function <FrameXML/SecureHandlers.lua:306>
[string "=(tail call)"]: ?

Locals:
self =

{
CreatePushArray = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:580
GetAverageItemLevel = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:2133
MixinDifferingObjects = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:715
FormatText = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:372
RegisterForGroupEvents = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:776
GetValueFromObjectByPath = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:677
MirrorAnchorPointCentered = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1140
HookScriptOnTooltipSetItem = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:170
IsAverageItemLevelAvailable = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:2105
CallFunctionAndSuppressErrorMessageAndSpeech = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:653
AreTalentsAvailable = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1955
GetItemQualityColor = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:988
CanInspect = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1737
IsInspectFrameOpen = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1729
RegisterNewSlashCommands = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:848
IsTableEmpty = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:396
RecalculateSizeOfGameTooltip = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1262
InspectUnit = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1629
CreateUnitRecord = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1530
CreateMarkupForClassIcon = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1066
UnitIsWildBattlePet = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:75
UpdateUnitRecord = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1567
ExistsInTable = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:589
HookSecureFuncIfExists = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:746
GetClassColorByClassFile = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:947
UnitIsBattlePetCompanion = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:87
GetUnitReactionIndex = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1430
GetPowerColor = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:979
FontExists = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1280
TextureExists = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1307
RemoveCallbackFromQueuedInspectCallbacks = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1675
IsFrameBackInFrameChain = defined @TipTac/libs/LibFroznFunctions-1.0/LibFroznFunctions-1.0.lua:1223
CallFunctionDelayed = defined @

To Reproduce
Steps to reproduce the behavior:

1. Hover over some random tooltip, try Dalaran Hearthstone or some profession skill (possibly has to be very soon after logging in)
2. Observe the above LUA error

Expected behavior
I should not get any LUA errors.

TipTac Reborn (please complete the following information):

• Version 23.01.28 (dev version from #180 (comment) )

WoW (please complete the following information):

• Flavor: Retail
• Version 10.0.5

Additional context
Possibly only happens soon after logging in.