diff --git a/cloud/dahua/src/main/java/com/example/dahua/mqtt/MqttManager.java b/cloud/dahua/src/main/java/com/example/dahua/mqtt/MqttManager.java
index 704a6da..71a9796 100644
--- a/cloud/dahua/src/main/java/com/example/dahua/mqtt/MqttManager.java
+++ b/cloud/dahua/src/main/java/com/example/dahua/mqtt/MqttManager.java
@@ -1,6 +1,5 @@
 package com.example.dahua.mqtt;
 
-import lombok.extern.log4j.Log4j2;
 import org.eclipse.paho.client.mqttv3.*;
 import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
 
--
libgit2 0.21.0