diff --git a/smqtt-common/src/main/java/io/github/quickmsg/common/channel/MqttChannel.java b/smqtt-common/src/main/java/io/github/quickmsg/common/channel/MqttChannel.java
index aa8f7410fe918bcd118af3086de92dd4869548d6..3ac5af9b542de70f1e23f05abb59b3948af541ce 100644
--- a/smqtt-common/src/main/java/io/github/quickmsg/common/channel/MqttChannel.java
+++ b/smqtt-common/src/main/java/io/github/quickmsg/common/channel/MqttChannel.java
@@ -77,6 +77,7 @@ public class MqttChannel {
     private Disposable closeDisposable;
 
 
+    @JsonIgnore
     private TimeAckManager timeAckManager;
 
     public void disposableClose() {
diff --git a/smqtt-common/src/main/java/io/github/quickmsg/common/metric/MetricManager.java b/smqtt-common/src/main/java/io/github/quickmsg/common/metric/MetricManager.java
index 561d369b3e0858ff460d3404d2d9edd05aad39a2..ea05e5940f775ed759bd005feda2e3e4bce067ef 100644
--- a/smqtt-common/src/main/java/io/github/quickmsg/common/metric/MetricManager.java
+++ b/smqtt-common/src/main/java/io/github/quickmsg/common/metric/MetricManager.java
@@ -38,7 +38,7 @@ public interface MetricManager {
         MemoryMXBean mxb = ManagementFactory.getMemoryMXBean();
         ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
         RuntimeMXBean runtimeBean = ManagementFactory.getRuntimeMXBean();
-        metrics.put("smqtt", "1.1.0");
+        metrics.put("smqtt", "1.1.1");
         metrics.put("start_time", sdf.format(new Date(runtimeBean.getStartTime())));
         metrics.put("jdk_home", props.getProperty("java.home"));
         metrics.put("jdk_version", props.getProperty("java.version"));
diff --git a/smqtt-common/src/main/java/io/github/quickmsg/common/utils/JacksonUtil.java b/smqtt-common/src/main/java/io/github/quickmsg/common/utils/JacksonUtil.java
index 3ba292d3c2d38cdd51d57aa9843c9a7a1256fd99..158a58efc6172934bd6fb61329ecf3ed75957d1c 100644
--- a/smqtt-common/src/main/java/io/github/quickmsg/common/utils/JacksonUtil.java
+++ b/smqtt-common/src/main/java/io/github/quickmsg/common/utils/JacksonUtil.java
@@ -34,7 +34,7 @@ public class JacksonUtil {
         try {
             return mapper.writeValueAsString(data);
         } catch (JsonProcessingException e) {
-            log.error("JacksonUtil bean2Json error", e);
+            log.error("JacksonUtil bean2Json {} error",data, e);
             return "";
         }
     }