diff --git a/src/plugins/http/src/httpResp.c b/src/plugins/http/src/httpResp.c
index a41367ad7faa74345b4e3fb9899e815e21c9b4fb..72604e79b710f09e67fde825915db63bc62243d9 100644
--- a/src/plugins/http/src/httpResp.c
+++ b/src/plugins/http/src/httpResp.c
@@ -50,9 +50,16 @@ static void httpSendErrorRespImp(HttpContext *pContext, int32_t httpCode, char *
   char head[512] = {0};
   char body[512] = {0};
 
+  int8_t httpVersion = 0;
+  int8_t keepAlive = 0;
+  if (pContext->parser != NULL) {
+    httpVersion = pContext->parser->httpVersion;
+    keepAlive = pContext->parser->keepAlive;
+  }
+
   int32_t bodyLen = sprintf(body, httpRespTemplate[HTTP_RESPONSE_JSON_ERROR], errNo, desc);
-  int32_t headLen = sprintf(head, httpRespTemplate[HTTP_RESPONSE_ERROR], httpVersionStr[pContext->parser->httpVersion],
-                            httpCode, httpCodeStr, httpKeepAliveStr[pContext->parser->keepAlive], bodyLen);
+  int32_t headLen = sprintf(head, httpRespTemplate[HTTP_RESPONSE_ERROR], httpVersionStr[httpVersion], httpCode,
+                            httpCodeStr, httpKeepAliveStr[keepAlive], bodyLen);
 
   httpWriteBuf(pContext, head, headLen);
   httpWriteBuf(pContext, body, bodyLen);
@@ -164,9 +171,16 @@ void httpSendSuccResp(HttpContext *pContext, char *desc) {
   char head[1024] = {0};
   char body[1024] = {0};
 
+  int8_t httpVersion = 0;
+  int8_t keepAlive = 0;
+  if (pContext->parser != NULL) {
+    httpVersion = pContext->parser->httpVersion;
+    keepAlive = pContext->parser->keepAlive;
+  }
+
   int32_t bodyLen = sprintf(body, httpRespTemplate[HTTP_RESPONSE_JSON_OK], TSDB_CODE_SUCCESS, desc);
-  int32_t headLen = sprintf(head, httpRespTemplate[HTTP_RESPONSE_OK], httpVersionStr[pContext->parser->httpVersion],
-                            httpKeepAliveStr[pContext->parser->keepAlive], bodyLen);
+  int32_t headLen = sprintf(head, httpRespTemplate[HTTP_RESPONSE_OK], httpVersionStr[httpVersion],
+                            httpKeepAliveStr[keepAlive], bodyLen);
 
   httpWriteBuf(pContext, head, headLen);
   httpWriteBuf(pContext, body, bodyLen);
@@ -177,9 +191,16 @@ void httpSendOptionResp(HttpContext *pContext, char *desc) {
   char head[1024] = {0};
   char body[1024] = {0};
 
+  int8_t httpVersion = 0;
+  int8_t keepAlive = 0;
+  if (pContext->parser != NULL) {
+    httpVersion = pContext->parser->httpVersion;
+    keepAlive = pContext->parser->keepAlive;
+  }
+
   int32_t bodyLen = sprintf(body, httpRespTemplate[HTTP_RESPONSE_JSON_OK], TSDB_CODE_SUCCESS, desc);
-  int32_t headLen = sprintf(head, httpRespTemplate[HTTP_RESPONSE_OPTIONS], httpVersionStr[pContext->parser->httpVersion],
-                            httpKeepAliveStr[pContext->parser->keepAlive], bodyLen);
+  int32_t headLen = sprintf(head, httpRespTemplate[HTTP_RESPONSE_OPTIONS], httpVersionStr[httpVersion],
+                            httpKeepAliveStr[keepAlive], bodyLen);
 
   httpWriteBuf(pContext, head, headLen);
   httpWriteBuf(pContext, body, bodyLen);
diff --git a/src/sync/src/syncRetrieve.c b/src/sync/src/syncRetrieve.c
index b3be1ace39586867f83cac650135ab0ced01afe4..d755ee9aa6f06d27eac144da67295ba02f98610a 100644
--- a/src/sync/src/syncRetrieve.c
+++ b/src/sync/src/syncRetrieve.c
@@ -503,9 +503,10 @@ void *syncRetrieveData(void *param) {
   taosClose(pPeer->syncFd);
 
   // The ref is obtained in both the create thread and the current thread, so it is released twice
+  sInfo("%s, sync retrieve data over, sstatus:%s", pPeer->id, syncStatus[pPeer->sstatus]);
+
   syncReleasePeer(pPeer);
   syncReleasePeer(pPeer);
 
-  sInfo("%s, sync retrieve data over, sstatus:%s", pPeer->id, syncStatus[pPeer->sstatus]);
   return NULL;
 }
diff --git a/tests/script/unique/db/replica_reduce31.sim b/tests/script/unique/db/replica_reduce31.sim
index 00a0bbfcb3e74628dc71e357bd66046532844c41..2313cbd85e05813a29bce15f96ac0094a3eb1664 100644
--- a/tests/script/unique/db/replica_reduce31.sim
+++ b/tests/script/unique/db/replica_reduce31.sim
@@ -99,9 +99,11 @@ print ========= step2 alter db
 sql_error alter database d1 replica 1
 sql_error alter database d2 replica 1
 sql_error alter database d3 replica 1
+sql_error alter database d4 replica 1
 sql alter database d1 replica 2
 sql alter database d2 replica 2
 sql alter database d3 replica 2
+sql alter database d4 replica 2
 
 $x = 0
 a2: 
@@ -129,9 +131,16 @@ if $data03 != 2 then
 	goto a2
 endi
 
+sql show d4.vgroups 
+print online vnodes $data03
+if $data03 != 2 then
+	goto a2
+endi
+
 sql alter database d1 replica 1
 sql alter database d2 replica 1
 sql alter database d3 replica 1
+sql alter database d4 replica 1
 
 $x = 0
 a1: 
@@ -159,6 +168,27 @@ if $data03 != 1 then
 	goto a1
 endi
 
+sql show d4.vgroups 
+print online vnodes $data03
+if $data03 != 1 then
+	goto a1
+endi
+
+sql show dnodes
+print $data00 $data01 $data02 $data03
+print $data10 $data11 $data12 $data13
+print $data20 $data21 $data22 $data23
+
+if $data02 != 0 then
+	goto a1
+endi
+if $data12 != 2 then
+	goto a1
+endi
+if $data22 != 2 then
+	goto a1
+endi
+
 print ========= step3
 sql reset query cache
 sleep 100
@@ -192,6 +222,7 @@ print ========= step4 alter db
 sql alter database d1 replica 2
 sql alter database d2 replica 2
 sql alter database d3 replica 2
+sql alter database d4 replica 2
 
 $x = 0
 step4: 
@@ -219,6 +250,12 @@ if $data03 != 2 then
 	goto step4
 endi
 
+sql show d4.vgroups 
+print online vnodes $data03
+if $data03 != 2 then
+	goto step4
+endi
+
 sql insert into d1.t1 values(now, 3)
 sql insert into d2.t2 values(now, 3)
 sql insert into d3.t3 values(now, 3)
@@ -286,4 +323,5 @@ sql select * from d4.t4
 
 system sh/exec.sh -n dnode1 -s stop  -x SIGINT
 system sh/exec.sh -n dnode2 -s stop  -x SIGINT
-system sh/exec.sh -n dnode3 -s stop  -x SIGINT
\ No newline at end of file
+system sh/exec.sh -n dnode3 -s stop  -x SIGINT
+system sh/exec.sh -n dnode4 -s stop  -x SIGINT
\ No newline at end of file