Don't assume that cards have traits in the deck importer

unpacked/Custom_Tile ArkhamDB Deck Importer a28140.ttslua

@@ -1050,7 +1050,7 @@ function handleUnderworldMarket(cardList, playerColor)
       -- Underworld Market found
       hasMarket = true
       card.zone = "SetAside3"
-    elseif (string.find(card.metadata.traits, "Illicit", 1, true)
+    elseif (string.find(card.metadata.traits or "", "Illicit", 1, true)
         and card.metadata.bonded_to == nil
         and not card.metadata.weakness) then
       table.insert(illicitList, i)
@@ -1093,7 +1093,7 @@ function handleHunchDeck(investigatorId, cardList, playerColor)
     local insightList = {}
     for i, card in ipairs(cardList) do
       if (card.metadata.type == "Event"
-          and string.match(card.metadata.traits, "Insight")
+          and string.match(card.metadata.traits or "", "Insight")
           and card.metadata.bonded_to == nil) then
         table.insert(insightList, i)
       end