diff --git a/acl/src/main/java/org/apache/rocketmq/acl/common/AuthorizationHeader.java b/acl/src/main/java/org/apache/rocketmq/acl/common/AuthorizationHeader.java
index 24eb6de8db..aa40b6fd33 100644
--- a/acl/src/main/java/org/apache/rocketmq/acl/common/AuthorizationHeader.java
+++ b/acl/src/main/java/org/apache/rocketmq/acl/common/AuthorizationHeader.java
@@ -18,7 +18,6 @@
 package org.apache.rocketmq.acl.common;
 
 import com.google.common.base.MoreObjects;
-import java.util.Arrays;
 import org.apache.commons.codec.DecoderException;
 import org.apache.commons.codec.binary.Base64;
 import org.apache.commons.codec.binary.Hex;
diff --git a/proxy/src/main/java/org/apache/rocketmq/proxy/grpc/v2/GrpcMessagingApplication.java b/proxy/src/main/java/org/apache/rocketmq/proxy/grpc/v2/GrpcMessagingApplication.java
index 3538fd2b94..806504d683 100644
--- a/proxy/src/main/java/org/apache/rocketmq/proxy/grpc/v2/GrpcMessagingApplication.java
+++ b/proxy/src/main/java/org/apache/rocketmq/proxy/grpc/v2/GrpcMessagingApplication.java
@@ -349,7 +349,6 @@ public class GrpcMessagingApplication extends MessagingServiceGrpc.MessagingServ
 
             @Override
             public void onError(Throwable t) {
-                log.error("telemetry onError", t);
                 responseTelemetryCommand.onError(t);
             }
 
@@ -400,8 +399,12 @@ public class GrpcMessagingApplication extends MessagingServiceGrpc.MessagingServ
         @Override
         public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
             if (r instanceof GrpcTask) {
-                GrpcTask grpcTask = (GrpcTask) r;
-                ResponseWriter.write(grpcTask.streamObserver, grpcTask.executeRejectResponse);
+                try {
+                    GrpcTask grpcTask = (GrpcTask) r;
+                    ResponseWriter.write(grpcTask.streamObserver, grpcTask.executeRejectResponse);
+                } catch (Throwable t) {
+                    log.warn("write rejected error response failed", t);
+                }
             }
         }
     }