diff --git a/admin/admin-web/src/main/java/com/alibaba/otter/canal/admin/config/WebConfig.java b/admin/admin-web/src/main/java/com/alibaba/otter/canal/admin/config/WebConfig.java
index 07512fce..6130591e 100644
--- a/admin/admin-web/src/main/java/com/alibaba/otter/canal/admin/config/WebConfig.java
+++ b/admin/admin-web/src/main/java/com/alibaba/otter/canal/admin/config/WebConfig.java
@@ -84,7 +84,9 @@ public class WebConfig implements WebMvcConfigurer {
             }
         })
             .addPathPatterns("/api/**")
-            .excludePathPatterns("/api/**/config/**")
+            .excludePathPatterns("/api/**/config/server_polling")
+            .excludePathPatterns("/api/**/config/instances_polling")
+            .excludePathPatterns("/api/**/config/instance_polling/**")
             .excludePathPatterns("/api/**/user/login")
             .excludePathPatterns("/api/**/user/logout")
             .excludePathPatterns("/api/**/user/info");
diff --git a/connector/rabbitmq-connector/src/main/java/com/alibaba/otter/canal/connector/rabbitmq/producer/CanalRabbitMQProducer.java b/connector/rabbitmq-connector/src/main/java/com/alibaba/otter/canal/connector/rabbitmq/producer/CanalRabbitMQProducer.java
index dee45436..07596586 100644
--- a/connector/rabbitmq-connector/src/main/java/com/alibaba/otter/canal/connector/rabbitmq/producer/CanalRabbitMQProducer.java
+++ b/connector/rabbitmq-connector/src/main/java/com/alibaba/otter/canal/connector/rabbitmq/producer/CanalRabbitMQProducer.java
@@ -6,7 +6,6 @@ import java.util.Map;
 import java.util.Properties;
 import java.util.concurrent.TimeoutException;
 
-import com.alibaba.otter.canal.common.utils.PropertiesUtils;
 import org.apache.commons.lang.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -15,6 +14,7 @@ import com.alibaba.fastjson.JSON;
 import com.alibaba.fastjson.serializer.SerializerFeature;
 import com.alibaba.otter.canal.common.CanalException;
 import com.alibaba.otter.canal.common.utils.ExecutorTemplate;
+import com.alibaba.otter.canal.common.utils.PropertiesUtils;
 import com.alibaba.otter.canal.connector.core.producer.AbstractMQProducer;
 import com.alibaba.otter.canal.connector.core.producer.MQDestination;
 import com.alibaba.otter.canal.connector.core.producer.MQMessageUtils;
@@ -26,6 +26,7 @@ import com.alibaba.otter.canal.connector.rabbitmq.config.RabbitMQConstants;
 import com.alibaba.otter.canal.connector.rabbitmq.config.RabbitMQProducerConfig;
 import com.alibaba.otter.canal.protocol.FlatMessage;
 import com.alibaba.otter.canal.protocol.Message;
+import com.rabbitmq.client.AlreadyClosedException;
 import com.rabbitmq.client.Channel;
 import com.rabbitmq.client.Connection;
 import com.rabbitmq.client.ConnectionFactory;
@@ -177,6 +178,8 @@ public class CanalRabbitMQProducer extends AbstractMQProducer implements CanalMQ
             this.connect.close();
             this.channel.close();
             super.stop();
+        } catch (AlreadyClosedException ex) {
+            logger.error("Connection is already closed", ex);
         } catch (IOException | TimeoutException ex) {
             throw new CanalException("Stop RabbitMQ producer error", ex);
         }