Hey since yesterday this problem is occuring when opening the tab with the normal sets:

21x BetterWardrobe\Modules\BlizzardAPI.lua:185: attempt to index local 'setInfo' (a nil value)
[string "@BetterWardrobe\Modules\BlizzardAPI.lua"]:185: in function GetSetSources' [string "@BetterWardrobe\Modules\Wardrobe-Appearances.lua"]:7297: in function GetLocationBasedCount'
[string "@BetterWardrobe\Modules\Wardrobe-Appearances.lua"]:4479: in function GetUsableSets' [string "@BetterWardrobe\Modules\Wardrobe-Appearances.lua"]:6407: in function UpdateSets'
[string "@BetterWardrobe\Modules\Wardrobe-Appearances.lua"]:6974: in function ResetPage' [string "@BetterWardrobe\Modules\Wardrobe-Appearances.lua"]:6398: in function Refresh'
[string "@BetterWardrobe\Modules\Wardrobe-Appearances.lua"]:6305: in function <BetterWardrobe\Modules\Wardrobe.lua:6293>
[string "=[C]"]: in function SetShown' [string "@BetterWardrobe\Modules\Wardrobe-Appearances.lua"]:1271: in function SetTab'
[string "@BetterWardrobe\Modules\Wardrobe-Appearances.lua"]:1176: in function `ClickTab'
[string ":OnClick"]:1: in function <[string ":OnClick"]:1>

Locals:
setID = 2059
setInfo = nil
(*temporary) = 2059
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = "attempt to index local 'setInfo' (a nil value)"
addon =

{
TransmogVendorSizeUpdated = true
ViewDelay = 3
useAltSet = false
modules = {
}
Sort = {
}
SecureHook = defined @ElvUI\Libraries\Ace3\AceHook-3.0\AceHook-3.0.lua:336
tooltip = BW_ProfileTooltip {
}
SetDefaultModulePrototype = defined @ElvUI\Libraries\Ace3\AceAddon-3.0\AceAddon-3.0.lua:409
MogIt = {
}
IsEnabled = defined @ElvUI\Libraries\Ace3\AceAddon-3.0\AceAddon-3.0.lua:451
GetActiveCategory = defined @BetterWardrobe\Modules\CollectionList.lua:217
RefreshCharConfig = defined @BetterWardrobe\Modules\Core.lua:1158
RegisterMessage = defined @ElvUI\Libraries\Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:90
UnregisterMessage = defined @ElvUI\Libraries\Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:153
validSetCache = {
}
ArmorSetModCache = {
}
db = {
}
SetEnabledState = defined @ElvUI\Libraries\Ace3\AceAddon-3.0\AceAddon-3.0.lua:424
Hook = defined @ElvUI\Libraries\Ace3\AceHook-3.0\AceHook-3.0.lua:274
GetSourceFromItem = defined @BetterWardrobe\Modules\Tooltips.lua:208
InitExtendedSetsSwap = defined @BetterWardrobe\Plugins\ExtendedTransmog.lua:6
OnEnable = defined @BetterWardrobe\Modules\Core.lua:1263
RefreshOutfitData = defined @BetterWardrobe\Modules\Core.lua:874
GetArtifactSourceInfo = defined @BetterWardrobe\Modules\ArtifactAppearances.lua:283
IsWeaponCat = defined @BetterWardrobe\Modules\CollectionList.lua:222
ItemAppearance = {
}
OnInitialize = defined @BetterWardrobe\Modules\Core.lua:1178
NewModule = defined @ElvUI\Libraries\Ace3\AceAddon-3.0\AceAddon-3.0.lua:235
Globals = {
}
SortSet = defined @BetterWardrobe\Modules\SortingFunctions.lua:509
HiddenAppearanceDB = {
}
GetName = defined @ElvUI\Libraries\Ace3\AceAddon-3.0\AceAddon-3.0.lua:279
C_TransmogCollection = {
}
Camera = {
}
name = "BetterWardrobe"
UI = {
}
Disable = defined @ElvUI\Libraries\Ace3\AceAddon-3.0\AceAddon-3.0.lua:314
GetSetType = defined @BetterWardrobe\Data\DataBase.lua:661
Unhook = defined @ElvUI\Libraries\Ace3\AceHook-3.0\AceHook-3.0.lua:418
Print = defined @ElvUI\Libraries\Ace3\AceConsole-3.0\AceConsole-3.0.lua:54
IsFavoriteItem = defined @BetterWardrobe\Modules\Wardrobe.lua:3436
usableSourceCache = {
}
ExtendTransmogView = defined @BetterWardrobe\Modules\TransmogVendor.lua:423
BuildClassArtifactAppearanceList = defined @BetterWardrobe\Modules\ArtifactAppearances.lua:177
TRANSMOG_SET_FILTER = {
}
Init = {
}
CreateChatLinkTransmogVendor = defined @BetterWardrobe\Modules\ImportExport.lua:299
EventHandler = defined @BetterWardrobe\Modules\Core.lua:1370
SelecteSavedList = false
CollectionList = {
}
GetSetCounts = defined @BetterWardrobe\Modules\BlizzardAPI.lua:495
RemoveItemSubstitute = defined @interfac

and this one :
https://i.imgur.com/wzkfpyg.png