Fixing (#30)

Author: Dev7ex

multiworld-bukkit/src/main/java/com/dev7ex/multiworld/listener/EntitySpawnListener.java

@@ -3,6 +3,7 @@
 import com.dev7ex.multiworld.api.bukkit.MultiWorldBukkitApi;
 import com.dev7ex.multiworld.api.bukkit.event.MultiWorldListener;
 import com.dev7ex.multiworld.api.bukkit.world.BukkitWorldHolder;
+import org.bukkit.entity.LivingEntity;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.entity.EntitySpawnEvent;
@@ -30,6 +31,10 @@ public void handleEntitySpawn(final EntitySpawnEvent event) {
         }
         final BukkitWorldHolder worldHolder = super.getWorldProvider().getWorldHolder(worldName).get();
 
+        if (!(event.getEntity() instanceof LivingEntity)) {
+            return;
+        }
+
         event.setCancelled(!worldHolder.isSpawnEntities());
     }