Witness: Fix for Witness plando crashes. (#2092)

worlds/witness/__init__.py

@@ -234,6 +234,11 @@ class WitnessWorld(World):
         return slot_data
 
     def create_item(self, item_name: str) -> Item:
+        # If the player's plando options are malformed, the item_name parameter could be a dictionary containing the
+        #   name of the item, rather than the item itself. This is a workaround to prevent a crash.
+        if type(item_name) is dict:
+            item_name = list(item_name.keys())[0]
+
         # this conditional is purely for unit tests, which need to be able to create an item before generate_early
         item_data: ItemData
         if hasattr(self, 'items') and self.items and item_name in self.items.item_data: