각종 경고 수정

Assets/Scripts/MineableBlock.cs

@@ -88,14 +88,16 @@ public class MineableBlock : NetworkBehaviour, IDamageable
             _health.OnDeath += HandleDeath;
         }
     }
-
-    void OnDestroy()
+    public override void OnDestroy() // 1. override 키워드 추가
     {
         if (_health != null)
         {
             _health.OnDamaged -= HandleDamaged;
             _health.OnDeath -= HandleDeath;
         }
+
+        // 2. 부모 클래스 실행
+        base.OnDestroy();
     }
 
     public override void OnNetworkSpawn()