NPC Natural Spawning:

-Null entities are now skipped when determining what NPC in a natural spawn entry to spawn in the world.

src/main/java/noppes/npcs/NPCSpawning.java

@@ -160,7 +160,9 @@ public class NPCSpawning {
                 } catch (Exception e) {
                     continue;
                 }
-                entities.add(entity);
+                if (entity != null) {
+                    entities.add(entity);
+                }
             }
 
             Entity spawnEntity = entities.get((int)Math.floor(Math.random()*entities.size()));