src/main/java/nu/nerd/moblimiter/MobLimiter.java

@@ -26,7 +26,6 @@ public class MobLimiter extends JavaPlugin {
         new ClickEvents();
         new EntityEvents();
         new CommandHandler();
-        System.out.println(configuration.getSpawnEggs());
 
     }
 

src/main/java/nu/nerd/moblimiter/configuration/Configuration.java

@@ -95,14 +95,20 @@ public class Configuration {
 
         }
 
-        for (String egg : plugin.getConfig().getStringList("spawn_eggs")) {
+        for (String eggName : plugin.getConfig().getStringList("spawn_eggs")) {
 
-            spawnEggs.add(Material.getMaterial(egg));
+            Material material = Material.matchMaterial(eggName);
+            if (material == null || !material.name().endsWith("_SPAWN_EGG")) {
+
+                plugin.getLogger().warning("Ignoring unsupported spawn egg material for this server version: " + eggName);
+                continue;
+
+            }
+
+            spawnEggs.add(material);
 
         }
 
-        System.out.println(spawnEggs);
-
     }
 
     /**

src/main/resources/config.yml

@@ -178,13 +178,10 @@ limits:
 
 spawn_eggs:
   - 'ALLAY_SPAWN_EGG'
-  - 'ARMADILLO_SPAWN_EGG'
   - 'AXOLOTL_SPAWN_EGG'
   - 'BAT_SPAWN_EGG'
   - 'BEE_SPAWN_EGG'
   - 'BLAZE_SPAWN_EGG'
-  - 'BOGGED_SPAWN_EGG'
-  - 'BREEZE_SPAWN_EGG'
   - 'CAT_SPAWN_EGG'
   - 'CAMEL_SPAWN_EGG'
   - 'CAVE_SPIDER_SPAWN_EGG'