diff --git a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/plugin/network/PacketConsumers.java b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/plugin/network/PacketConsumers.java
index cceb6c1fa..36a5bb575 100644
--- a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/plugin/network/PacketConsumers.java
+++ b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/plugin/network/PacketConsumers.java
@@ -906,9 +906,14 @@ public class PacketConsumers {
                 Object id = Reflections.method$CustomPacketPayload$Type$id.invoke(type);
                 String channel = id.toString();
                 if (!channel.equals(NetworkManager.MOD_CHANNEL)) return;
-                ByteBuf buf = (ByteBuf) Reflections.method$DiscardedPayload$data.invoke(payload);
-                byte[] data = new byte[buf.readableBytes()];
-                buf.readBytes(data);
+                byte[] data;
+                if (Reflections.method$DiscardedPayload$data != null) {
+                    ByteBuf buf = (ByteBuf) Reflections.method$DiscardedPayload$data.invoke(payload);
+                    data = new byte[buf.readableBytes()];
+                    buf.readBytes(data);
+                } else {
+                    data = (byte[]) Reflections.method$DiscardedPayload$dataByteArray.invoke(payload);
+                }
                 String decodeData = new String(data, StandardCharsets.UTF_8);
                 if (!decodeData.endsWith("init")) return;
                 int firstColon = decodeData.indexOf(':');
diff --git a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/util/Reflections.java b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/util/Reflections.java
index be56d9e0a..f0c928bdf 100644
--- a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/util/Reflections.java
+++ b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/util/Reflections.java
@@ -5668,11 +5668,20 @@ public class Reflections {
             .map(it -> ReflectionUtils.getMethod(it, clazz$ResourceLocation))
             .orElse(null);
 
-    // 1.20.5+
+    // 1.20.5~1.21.4#221
     public static final Method method$DiscardedPayload$data = Optional.ofNullable(clazz$DiscardedPayload)
             .map(it -> ReflectionUtils.getMethod(it, ByteBuf.class))
             .orElse(null);
 
+    // 1.21.4#222+
+    // 我tm服了这个 sb paper 你 tmd 乱改签名干什么有病啊
+    public static final Method method$DiscardedPayload$dataByteArray = Optional.ofNullable(method$DiscardedPayload$data)
+            .map(m -> (Method) null)
+            .orElseGet(() -> Optional.ofNullable(clazz$DiscardedPayload)
+                    .map(clazz -> ReflectionUtils.getMethod(clazz, byte[].class))
+                    .orElse(null)
+            );
+
     public static final Class<?> clazz$ClientboundDisconnectPacket = requireNonNull(
             ReflectionUtils.getClazz(
                     BukkitReflectionUtils.assembleMCClass("network.protocol.common.ClientboundDisconnectPacket"),