diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 89f0fcee02b90bf83257597690edc3959f3f2504..f6768bf494d833d7d9a81aa28b69990bcf8daa8c 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -1488,18 +1488,6 @@ char* syncNode2SimpleStr(const SSyncNode* pSyncNode) {
            pSyncNode->commitIndex, logBeginIndex, logLastIndex, snapshot.lastApplyIndex, pSyncNode->pRaftCfg->isStandBy,
            pSyncNode->replicaNum, pSyncNode->pRaftCfg->lastConfigIndex, pSyncNode->changing, pSyncNode->restoreFinish);
 
-  /*
-    snprintf(s, len,
-             "syncNode: vgId:%d, term:%lu, commit:%ld, state:%d %s, standby:%d, "
-             "lc:%lu, "
-             "lc-user:%lu, "
-             "ems:%d, replica-num:%d, restore:%d, changing:%d",
-             pSyncNode->vgId, pSyncNode->pRaftStore->currentTerm, pSyncNode->commitIndex, pSyncNode->state,
-             syncUtilState2String(pSyncNode->state), pSyncNode->pRaftCfg->isStandBy, pSyncNode->electTimerLogicClock,
-             pSyncNode->electTimerLogicClockUser, pSyncNode->electTimerMS, pSyncNode->replicaNum,
-             pSyncNode->restoreFinish, pSyncNode->changing);
-  */
-
   return s;
 }
 
diff --git a/source/libs/sync/src/syncSnapshot.c b/source/libs/sync/src/syncSnapshot.c
index 13343111f36989d408f47ca2a8e105f0ff8b7c9e..0e77876b97fdab300089a9a0a7a217ccc700dfbe 100644
--- a/source/libs/sync/src/syncSnapshot.c
+++ b/source/libs/sync/src/syncSnapshot.c
@@ -683,7 +683,16 @@ int32_t syncNodeOnSnapshotSendCb(SSyncNode *pSyncNode, SyncSnapshotSend *pMsg) {
         needRsp = true;
 
       } else {
-        ASSERT(0);
+        // error log
+        do {
+          char logBuf[96];
+          snprintf(logBuf, sizeof(logBuf), "snapshot receiver recv error seq:%d, my ack:%d", pMsg->seq, pReceiver->ack);
+          char *eventLog = snapshotReceiver2SimpleStr(pReceiver, logBuf);
+          syncNodeErrorLog(pSyncNode, eventLog);
+          taosMemoryFree(eventLog);
+        } while (0);
+
+        return -1;
       }
 
       // send ack
@@ -764,8 +773,8 @@ int32_t syncNodeOnSnapshotRspCb(SSyncNode *pSyncNode, SyncSnapshotRsp *pMsg) {
 
       } else {
         do {
-          char logBuf[64];
-          snprintf(logBuf, sizeof(logBuf), "error ack, recv ack:%d, my seq:%d", pMsg->ack, pSender->seq);
+          char logBuf[96];
+          snprintf(logBuf, sizeof(logBuf), "snapshot sender recv error ack:%d, my seq:%d", pMsg->ack, pSender->seq);
           char *eventLog = snapshotSender2SimpleStr(pSender, logBuf);
           syncNodeErrorLog(pSyncNode, eventLog);
           taosMemoryFree(eventLog);