diff --git a/python/examples/lac/lac_client.py b/python/examples/lac/lac_client.py
index ab9af730abb2f5b33f4d0292115b2f7bf682f278..22f3c511dcd2540365623ef9428b60cfcb5e5a34 100644
--- a/python/examples/lac/lac_client.py
+++ b/python/examples/lac/lac_client.py
@@ -35,5 +35,4 @@ for line in sys.stdin:
     begin = fetch_map['crf_decode.lod'][0]
     end = fetch_map['crf_decode.lod'][1]
     segs = reader.parse_result(line, fetch_map["crf_decode"][begin:end])
-
-    print({"word_seg": "|".join(segs)})
+    print("word_seg: " + "|".join(str(words) for words in segs))
diff --git a/python/examples/senta/README.md b/python/examples/senta/README.md
index 9aeb6d1191719e067e2cb99d408a6d091c25ede3..8929a9312c17264800f299f77afb583221006068 100644
--- a/python/examples/senta/README.md
+++ b/python/examples/senta/README.md
@@ -5,6 +5,8 @@
 ```
 python -m paddle_serving_app.package --get_model senta_bilstm
 python -m paddle_serving_app.package --get_model lac
+tar -xzvf senta_bilstm.tar.gz
+tar -xzvf lac.tar.gz
 ```
 
 ## Start HTTP Service
@@ -17,5 +19,5 @@ In this demo, the LAC task is placed in the preprocessing part of the HTTP predi
 
 ## Client prediction
 ```
-curl -H "Content-Type:application/json" -X POST -d '{"feed":[{"words": "天气不错"}], "fetch":["class_probs"]}' http://127.0.0.1:9292/senta/prediction
+curl -H "Content-Type:application/json" -X POST -d '{"feed":[{"words": "天气不错"}], "fetch":["class_probs"]}' http://127.0.0.1:9393/senta/prediction
 ```
diff --git a/python/examples/senta/README_CN.md b/python/examples/senta/README_CN.md
index f958af221d843748836bea325f87ba603411d39c..e5624dc975e6bc00de219f68cbf74dea7cac8360 100644
--- a/python/examples/senta/README_CN.md
+++ b/python/examples/senta/README_CN.md
@@ -5,6 +5,8 @@
 ```
 python -m paddle_serving_app.package --get_model senta_bilstm
 python -m paddle_serving_app.package --get_model lac
+tar -xzvf lac.tar.gz
+tar -xzvf senta_bilstm.tar.gz
 ```
 
 ## 启动HTTP服务
@@ -17,5 +19,5 @@ python senta_web_service.py
 
 ## 客户端预测
 ```
-curl -H "Content-Type:application/json" -X POST -d '{"feed":[{"words": "天气不错"}], "fetch":["class_probs"]}' http://127.0.0.1:9292/senta/prediction
+curl -H "Content-Type:application/json" -X POST -d '{"feed":[{"words": "天气不错"}], "fetch":["class_probs"]}' http://127.0.0.1:9393/senta/prediction
 ```
diff --git a/python/paddle_serving_app/models/model_list.py b/python/paddle_serving_app/models/model_list.py
index cf0ca3bf5765d65065e541462eb919ccc5c4b978..d5f42ab78acdbe837a719908d27cda513da02c3f 100644
--- a/python/paddle_serving_app/models/model_list.py
+++ b/python/paddle_serving_app/models/model_list.py
@@ -38,7 +38,7 @@ class ServingModels(object):
         object_detection_url = "https://paddle-serving.bj.bcebos.com/paddle_hub_models/image/ObjectDetection/"
         ocr_url = "https://paddle-serving.bj.bcebos.com/paddle_hub_models/image/OCR/"
         senta_url = "https://paddle-serving.bj.bcebos.com/paddle_hub_models/text/SentimentAnalysis/"
-        semantic_url = "https://paddle-serving.bj.bcebos.com/paddle_hub_models/text/SemanticRepresentation/"
+        semantic_url = "https://paddle-serving.bj.bcebos.com/paddle_hub_models/text/SemanticModel/"
         wordseg_url = "https://paddle-serving.bj.bcebos.com/paddle_hub_models/text/LexicalAnalysis/"
 
         self.url_dict = {}
diff --git a/python/paddle_serving_app/reader/lac_reader.py b/python/paddle_serving_app/reader/lac_reader.py
index 7e804ff371e2d90d79f7f663e83a854b1b0c9647..8f7d79a6a1e7ce8c4c86b689e2856eea6fa42158 100644
--- a/python/paddle_serving_app/reader/lac_reader.py
+++ b/python/paddle_serving_app/reader/lac_reader.py
@@ -111,6 +111,10 @@ class LACReader(object):
         return word_ids
 
     def parse_result(self, words, crf_decode):
+        try:
+            words = unicode(words, "utf-8")
+        except:
+            pass
         tags = [self.id2label_dict[str(x[0])] for x in crf_decode]
 
         sent_out = []
diff --git a/python/paddle_serving_server/monitor.py b/python/paddle_serving_server/monitor.py
index 3f1ff6436917b8ae7ff4ea06fcae1f55bd65e887..84146039c40794436030a8c5c6ba9d18ccbfda06 100644
--- a/python/paddle_serving_server/monitor.py
+++ b/python/paddle_serving_server/monitor.py
@@ -20,7 +20,7 @@ Usage:
 import os
 import time
 import argparse
-import commands
+import subprocess
 import datetime
 import shutil
 import tarfile
@@ -209,7 +209,7 @@ class HadoopMonitor(Monitor):
         remote_filepath = os.path.join(path, filename)
         cmd = '{} -ls {} 2>/dev/null'.format(self._cmd_prefix, remote_filepath)
         _LOGGER.debug('check cmd: {}'.format(cmd))
-        [status, output] = commands.getstatusoutput(cmd)
+        [status, output] = subprocess.getstatusoutput(cmd)
         _LOGGER.debug('resp: {}'.format(output))
         if status == 0:
             [_, _, _, _, _, mdate, mtime, _] = output.split('\n')[-1].split()
diff --git a/python/paddle_serving_server_gpu/monitor.py b/python/paddle_serving_server_gpu/monitor.py
index 3f1ff6436917b8ae7ff4ea06fcae1f55bd65e887..84146039c40794436030a8c5c6ba9d18ccbfda06 100644
--- a/python/paddle_serving_server_gpu/monitor.py
+++ b/python/paddle_serving_server_gpu/monitor.py
@@ -20,7 +20,7 @@ Usage:
 import os
 import time
 import argparse
-import commands
+import subprocess
 import datetime
 import shutil
 import tarfile
@@ -209,7 +209,7 @@ class HadoopMonitor(Monitor):
         remote_filepath = os.path.join(path, filename)
         cmd = '{} -ls {} 2>/dev/null'.format(self._cmd_prefix, remote_filepath)
         _LOGGER.debug('check cmd: {}'.format(cmd))
-        [status, output] = commands.getstatusoutput(cmd)
+        [status, output] = subprocess.getstatusoutput(cmd)
         _LOGGER.debug('resp: {}'.format(output))
         if status == 0:
             [_, _, _, _, _, mdate, mtime, _] = output.split('\n')[-1].split()