I was turning in a quest for the Night Fae Assault in the maw today and got the following lua error message. Since I use this addon, I thought you might have some idea what its referring to.

Message: Interface\FrameXML\QuestInfo.lua:1074: Invalid quest item in SetQuestItem("type", index)
Time: Sun Jul 18 14:44:23 2021
Count: 1
Stack: Interface\FrameXML\QuestInfo.lua:1074: Invalid quest item in SetQuestItem("type", index)
[string "=[C]"]: in function `SetQuestItem'
[string "@interface\FrameXML\QuestInfo.lua"]:1074: in function <Interface\FrameXML\QuestInfo.lua:1059>

Locals: (*temporary) = GameTooltip {
BottomLeftCorner = {
}
OnBackdropLoaded = defined @interface\SharedXML\Backdrop.lua:205
GetBackdropColor = defined @interface\SharedXML\Backdrop.lua:443
SetHyperlink = defined =[C]:-1
RightEdge = {
}
ClearBackdrop = defined @interface\SharedXML\Backdrop.lua:335
Show = defined =[C]:-1
SetLootCurrency = defined =[C]:-1
SetLootItem = defined =[C]:-1
numMoneyFrames = 1
SetRecipeReagentItem = defined =[C]:-1
SetMerchantItem = defined =[C]:-1
SetupTextureCoordinates = defined @interface\SharedXML\Backdrop.lua:267
HasBackdropInfo = defined @interface\SharedXML\Backdrop.lua:331
GetEdgeSize = defined @interface\SharedXML\Backdrop.lua:241
TopEdge = {
}
SetLootRollItem = defined =[C]:-1
BottomRightCorner = {
}
SetBackdropColor = defined @interface\SharedXML\Backdrop.lua:452
LeftEdge = {
}
SetCurrencyByID = defined =[C]:-1
textLeft1Font = "GameTooltipHeaderText"
progressBarPool =

{
}
SetCurrencyToken = defined =[C]:-1
updateTooltipTimer = 0.020000
SetBackdropBorderColor = defined @interface\SharedXML\Backdrop.lua:475
SetArtifactPowerByID = defined =[C]:-1
textRight2Font = "GameTooltipText"
ClearLines = defined =[C]:-1
SetBackdrop = defined @interface\SharedXML\Backdrop.lua:382
TopOverlay = {
}
GetBackdropBorderColor = defined @interface\SharedXML\Backdrop.lua:462
GetBackdrop = defined @interface\SharedXML\Backdrop.lua:400
SetUnitDebuff = defined =[C]:-1
hasMoney = 1
SetBorderBlendMode = defined @interface\SharedXML\Backdrop.lua:319
SetToyByItemID = defined =[C]:-1
widgetContainer = {
}
0 =
ApplyBackdrop = defined @interface\SharedXML\Backdrop.lua:347
comparing = false
waitingForData = false
TextLeft1 = GameTooltipTextLeft1 {
}
ItemTooltip = {
}
SetLFGDungeonShortageReward = defined =[C]:-1
Center = {
}
OnBackdropSizeChanged = defined @interface\SharedXML\Backdrop.lua:235
SetUnitBuff = defined =[C]:-1
SetLFGDungeonReward = defined =[C]:-1
TopLeftCorner = {
}
textRight1Font = "GameTooltipHeaderText"
TextRight1 = GameTooltipTextRight1 {
}
BottomEdge = {
}
SetAction = defined =[C]:-1
textLeft2Font = "GameTooltipText"
SetCurrencyTokenByID = defined =[C]:-1
TextRight2 = GameTooltipTextRight2 {
}
TextLeft2 = GameTooltipTextLeft2 {
}
SetUnitAura = defined =[C]:-1
SetBackpackToken = defined =[C]:-1
shoppingTooltips = {
}
backdropInfo = {
}
needsReset = true
SetupPieceVisuals = defined @interface\SharedXML\Backdrop.lua:299
TopRightCorner = {
}
BottomOverlay = {
}
SetRecipeResultItem = defined =[C]:-1
}
(*temporary) = "reward"
(*temporary) = 1