command issue

[Lpker-2006]

Traceback (most recent call last):
File "test_2.py", line 301, in run
File "test_2.py", line 104, in server_hello
File "requests/api.py", line 112, in post
File "requests/api.py", line 58, in request
File "requests/sessions.py", line 508, in request
File "requests/sessions.py", line 618, in send
File "requests/adapters.py", line 508, in send
ConnectionError: HTTPConnectionPool(host='x.x.x.x', port=47832): Max retries exceeded with url: /api/root_274973439835060/hello (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fc9ca65ef50>: Failed to establish a new connection: [Errno 111] Connection refused',))

Server : Window2012
cilent:Linux

my builider arg is : -p Linux --server myhost:port -o xxxx --persistent

once i send a command from agent_console.html
i will get a error which is NewConnectionError

my english is poor so hoping you guy can understand what i am talking about