some nil handling

src/core/MythosArea.ttslua

@@ -163,7 +163,7 @@ end
 
 -- Listens for cards entering the encounter deck or encounter discard, discards tokens on them,
 -- and resets the spawn state for the cards when they do.
-function onObjectEnterContainer(container, object)
+function tryObjectEnterContainer(container, object)
   local localPos = self.positionToLocal(container.getPosition())
   if inArea(localPos, ENCOUNTER_DECK_AREA) or inArea(localPos, ENCOUNTER_DISCARD_AREA) then
     tokenSpawnTrackerApi.resetTokensSpawned(object)

src/playercards/CardsThatSealTokens.ttslua

@@ -360,11 +360,15 @@ function resolveSealed(playerColor)
     broadcastToAll("No tokens sealed.", "Red")
     return
   end
+
   local closestMatColor = playermatApi.getMatColorByPosition(self.getPosition())
   local mat = guidReferenceApi.getObjectByOwnerAndType(closestMatColor, "Playermat")
   local guidToBeResolved = table.remove(sealedTokens)
   local resolvedToken = getObjectFromGUID(guidToBeResolved)
-  resolvedToken.UI.setXml("")
+  if resolvedToken ~= nil then
+    resolvedToken.UI.setXml("")
+  end
+
   updateStackSize()
   updateSave()
   chaosBagApi.drawChaosToken(mat, true, _, guidToBeResolved)
@@ -374,9 +378,10 @@ end
 function updateStackSize()
   if MAX_SEALED == 1 then return end
   if #sealedTokens == 0 then return end
+
   -- get topmost sealed token
   local topToken = getObjectFromGUID(sealedTokens[#sealedTokens])
-  local name = topToken.getName()
+  if topToken == nil then return end
 
   topToken.UI.setXmlTable({
     {
@@ -387,7 +392,7 @@ function updateStackSize()
         rotation = "0 0 180",
         scale = "0.2 0.2 1",
         position = "0 0 -12",
-        color = tokenColor[name] or "#77674DE6"
+        color = tokenColor[topToken.getName()] or "#77674DE6"
       },
       children = {
         tag = "Text",

src/playermat/Playermat.ttslua

@@ -1335,7 +1335,7 @@ function spawnTokensOrShowHelper(card)
   end
 end
 
-function onObjectEnterContainer(container, object)
+function tryObjectEnterContainer(container, object)
   if object.type ~= "Card" then return end
 
   local localCardPos = self.positionToLocal(object.getPosition())