diff --git a/docs/examples/node/websocketexample/tmq_example.js b/docs/examples/node/websocketexample/tmq_example.js
index b0e52360c9..fc9d2889e0 100644
--- a/docs/examples/node/websocketexample/tmq_example.js
+++ b/docs/examples/node/websocketexample/tmq_example.js
@@ -62,7 +62,7 @@ async function subscribe(consumer) {
             for (let [key, value] of res) {
                 console.log(`data: ${key} ${value}`);
             }
-            consumer.commit();
+            await consumer.commit();
             console.log("Commit offset manually successfully.");
         }
     } catch (err) {
@@ -77,7 +77,7 @@ async function test() {
     let consumer = null;
     try {
         await prepare();
-        let consumer = await createConsumer()
+        consumer = await createConsumer()
         await subscribe(consumer)
         await consumer.unsubscribe();
         console.log("Consumer unsubscribed successfully.");
diff --git a/docs/examples/node/websocketexample/tmq_seek_example.js b/docs/examples/node/websocketexample/tmq_seek_example.js
index 0dea7e1671..259614d5db 100644
--- a/docs/examples/node/websocketexample/tmq_seek_example.js
+++ b/docs/examples/node/websocketexample/tmq_seek_example.js
@@ -31,7 +31,7 @@ async function prepare() {
     conf.setUser('root');
     conf.setPwd('taosdata');
     conf.setDb('power');
-    const createDB = `CREATE DATABASE IF NOT EXISTS POWER ${db} KEEP 3650 DURATION 10 BUFFER 16 WAL_LEVEL 1;`;
+    const createDB = `CREATE DATABASE IF NOT EXISTS ${db} KEEP 3650 DURATION 10 BUFFER 16 WAL_LEVEL 1;`;
     const createStable = `CREATE STABLE IF NOT EXISTS ${db}.${stable} (ts timestamp, current float, voltage int, phase float) TAGS (location binary(64), groupId int);`;
 
     let wsSql = await taos.sqlConnect(conf);
@@ -45,7 +45,7 @@ async function prepare() {
     for (let i = 0; i < 10; i++) {
         await wsSql.exec(`INSERT INTO d1001 USING ${stable} (location, groupId) TAGS ("California.SanFrancisco", 3) VALUES (NOW, ${10 + i}, ${200 + i}, ${0.32 + i})`);
     }
-    wsSql.Close();
+    await wsSql.close();
 }
 
 // ANCHOR: subscribe 
diff --git a/docs/examples/python/schemaless_ws.py b/docs/examples/python/schemaless_ws.py
index 3c41d1768b..39de55393d 100644
--- a/docs/examples/python/schemaless_ws.py
+++ b/docs/examples/python/schemaless_ws.py
@@ -1,19 +1,21 @@
 import taosws
 
+host = "localhost"
+port = 6041
 def prepare():
     conn = None
     try:
         conn = taosws.connect(user="root",
                             password="taosdata",
-                            host="localhost",
-                            port=6041)
+                            host=host,
+                            port=port)
 
         # create database
         rowsAffected = conn.execute(f"CREATE DATABASE IF NOT EXISTS power")
         assert rowsAffected == 0
 
     except Exception as err:
-        print(f"Failed to create db and table, err:{err}")
+        print(f"Failed to create db and table, db addrr:{host}:{port} ; ErrMessage:{err}")
         raise err
     finally:
         if conn:
@@ -32,8 +34,7 @@ def schemaless_insert():
     jsonDemo = [
         '{"metric": "metric_json","timestamp": 1626846400,"value": 10.3, "tags": {"groupid": 2, "location": "California.SanFrancisco", "id": "d1001"}}'
     ]
-    host = "localhost"
-    port = 6041
+
     try:
         conn = taosws.connect(user="root",
                               password="taosdata",
@@ -76,6 +77,6 @@ def schemaless_insert():
 if __name__ == "__main__":
     try:
         prepare()
-        schemaless_insert
+        schemaless_insert()
     except Exception as err:
           print(f"Failed to insert data with schemaless, err:{err}")   
diff --git a/docs/examples/python/stmt_native.py b/docs/examples/python/stmt_native.py
index 16975d6895..a1af7d1dd7 100644
--- a/docs/examples/python/stmt_native.py
+++ b/docs/examples/python/stmt_native.py
@@ -7,8 +7,8 @@ numOfRow = 10
 
 conn = None
 stmt = None
-host="localhost",        
-port=6030,
+host="localhost"        
+port=6030
 try:
     conn = taos.connect(
         user="root",
diff --git a/docs/examples/python/stmt_ws.py b/docs/examples/python/stmt_ws.py
index 74f071fde1..45d9222315 100644
--- a/docs/examples/python/stmt_ws.py
+++ b/docs/examples/python/stmt_ws.py
@@ -13,8 +13,8 @@ port=6041
 try:
     conn = taosws.connect(user="root",
                           password="taosdata",
-                          host="localhost",
-                          port=6041)
+                          host=host,
+                          port=port)
 
     conn.execute("CREATE DATABASE IF NOT EXISTS power")
     conn.execute("USE power")
diff --git a/docs/examples/python/tmq_native.py b/docs/examples/python/tmq_native.py
index 8181e1c2db..22a9b805bc 100644
--- a/docs/examples/python/tmq_native.py
+++ b/docs/examples/python/tmq_native.py
@@ -50,7 +50,7 @@ from taos.tmq import Consumer
 
 def create_consumer():
     host = "localhost"
-    port = 6030
+    port = "6030"
     groupId = "group1"
     clientId = "1"
     try:
diff --git a/docs/zh/04-get-started/03-package.md b/docs/zh/04-get-started/03-package.md
index 4906a2fcfa..7df41af831 100644
--- a/docs/zh/04-get-started/03-package.md
+++ b/docs/zh/04-get-started/03-package.md
@@ -146,7 +146,7 @@ Note: 从 3.0.1.7 开始，只提供 TDengine 客户端的 Windows 客户端的
 </Tabs>
 
 :::info
-下载其他组件、最新 Beta 版及之前版本的安装包，请点击[发布历史页面](../../releases/tdengine)。
+下载其他组件、最新 Beta 版及之前版本的安装包，请点击[发布历史页面](https://docs.taosdata.com/releases/tdengine/)。
 :::
 
 :::note