diff --git a/common/command.py b/common/command.py
index a045a6ae..2af96419 100644
--- a/common/command.py
+++ b/common/command.py
@@ -99,7 +99,7 @@ def upload_file(ssh_client, local_path, remote_path, stdio=None):
     """
     stdio.verbose("Please wait a moment, upload file to server {0}, local file path {1}, remote file path {2}".format(ssh_client.get_name(), local_path, remote_path))
     try:
-        ssh_client.upload(local_path, remote_path)
+        ssh_client.upload(remote_path, local_path)
     except Exception as e:
         stdio.error("Upload File Failed error: {0}".format(e))
 
diff --git a/handler/analyzer/analyze_flt_trace.py b/handler/analyzer/analyze_flt_trace.py
index 8624baaf..cac530a1 100644
--- a/handler/analyzer/analyze_flt_trace.py
+++ b/handler/analyzer/analyze_flt_trace.py
@@ -202,8 +202,6 @@ def __get_offline_log_file(self, ssh_client, log_path, local_store_dir):
         if self.flt_trace_id is not None and (len(log_name_list) > 0):
             grep_cmd = "grep -e '{grep_args}' {log_file} > {local_store_path} ".format(grep_args=self.flt_trace_id, log_file=' '.join(log_name_list), local_store_path=local_store_path)
             LocalClient(self.stdio).run(grep_cmd)
-            log_full_path = "{gather_path}/{log_name}".format(gather_path=log_path, log_name=self.flt_trace_id)
-            download_file(ssh_client, log_full_path, local_store_path, self.stdio)
 
     def __get_log_name_list_offline(self):
         """
diff --git a/handler/gather/gather_obstack2.py b/handler/gather/gather_obstack2.py
index 2ca09f70..9b0e8084 100644
--- a/handler/gather/gather_obstack2.py
+++ b/handler/gather/gather_obstack2.py
@@ -201,7 +201,7 @@ def __chmod_obstack2(self, ssh_client):
 
     def __is_obstack_exists(self, ssh_client):
         cmd = "test -e {file} && echo exists".format(file=const.OBSTACK2_DEFAULT_INSTALL_PATH)
-        stdout = ssh_client.exec_cmd(cmd)[0]
+        stdout = ssh_client.exec_cmd(cmd)
         if stdout == 'exists':
             return False
         else: