lua error on learning classic recipes

[npaganini]

Learned a classic recipe and got this error

[CraftScan/Config/ConfigPage.lua]:721: in function <CraftScan/Config/ConfigPage.lua:716>

Locals:
self = Frame {
 NineSlice = Frame {
 }
 NoResultsText = FontString {
 }
 selectionBehavior = <table> {
 }
 ScrollBar = Frame {
 }
 Background = Texture {
 }
 ScrollBox = Frame {
 }
}
event = "NEW_RECIPE_LEARNED"
recipeID = 28267
recipeLevel = nil
baseRecipeID = nil
profInfo = <table> {
 skillLevel = 0
 professionID = 2548
 sourceCounter = 5
 parentProfessionName = "Cooking"
 parentProfessionID = 185
 isPrimaryProfession = false
 profession = 5
 skillModifier = 0
 professionName = "Classic Cooking"
 maxSkillLevel = 0
 expansionName = "Classic"
}
char = "Kargaryen-Kel'Thuzad"
(*temporary) = nil
(*temporary) = true
(*temporary) = "Kel'Thuzad"
(*temporary) = "Kargaryen-Kel'Thuzad"
(*temporary) = "-"
(*temporary) = "Kel'Thuzad"
(*temporary) = "attempt to index field '?' (a nil value)"
CraftScan = <table> {
 State = <table> {
 }
 Analytics = <table> {
 }
 Settings = <table> {
 }
 DB = <table> {
 }
 ConcentrationData = <table> {
 }
 Object = <table> {
 }
 Config = <table> {
 }
 Utils = <table> {
 }
 Scanner = <table> {
 }
 ChatOrderSortOrder = <table> {
 }
 MessageType = <table> {
 }
 L = <table> {
 }
 AnalyticsTableSortOrder = <table> {
 }
 LIVE = <table> {
 }
 Debug = <table> {
 }
 Frames = <table> {
 }
 LOCAL = <table> {
 }
 CONST = <table> {
 }
 WaitGroup = <table> {
 }
 Events = <table> {
 }
 Dialog = <table> {
 }
}