diff --git a/src/main/java/cn/citycraft/TellRaw/FancyMessage.java b/src/main/java/cn/citycraft/TellRaw/FancyMessage.java
index 547c22c..54721f8 100644
--- a/src/main/java/cn/citycraft/TellRaw/FancyMessage.java
+++ b/src/main/java/cn/citycraft/TellRaw/FancyMessage.java
@@ -235,6 +235,9 @@ public abstract class FancyMessage implements JsonRepresentedObject, Cloneable,
                         }
                     }
                 }
+                if (getNMSsaveNBTMethod == null || nmsNBTTagCompound == null) {
+                    throw new ClassNotFoundException("Can't find the NBTMethod or NBTTagCompound class");
+                }
                 if (!useProtocolLib) {
                     Bukkit.getLogger().info("[TellRawLib] 使用ChatSerializer序列化类处理...");
                 } else {