TrytonConnectionProblem

# Server Side Stack Trace
(nereid)pritishc@pritishc-HP-15-Notebook-PC ~ $ trytond --debug
[Tue Jul 29 09:40:34 2014] INFO:server:using default configuration
[Tue Jul 29 09:40:34 2014] INFO:server:initialising distributed objects services
[Tue Jul 29 09:40:34 2014] INFO:server:starting JSON-RPC protocol on localhost:8000
> /home/pritishc/Envs/nereid/local/lib/python2.7/site-packages/trytond-3.2.1-py2.7.egg/trytond/backend/postgresql/database.py(5)<module>()
-> from psycopg2.pool import ThreadedConnectionPool
(Pdb) n

# Client Side Stack Trace
# Internal Server Error 500
  File "/home/pritishc/Envs/nereid/local/lib/python2.7/site-packages/tryton/gui/window/dbcreate.py", line 70, in server_change
    common.refresh_langlist(self.combo_language, host, port)

  File "/home/pritishc/Envs/nereid/local/lib/python2.7/site-packages/tryton/common/common.py", line 263, in refresh_langlist
    lang_list = rpc.db_exec(host, port, 'list_lang')

  File "/home/pritishc/Envs/nereid/local/lib/python2.7/site-packages/tryton/rpc.py", line 57, in db_exec
    result = getattr(connection.common.db, method)(None, None, *args)

  File "/usr/lib/python2.7/xmlrpclib.py", line 1224, in __call__
    return self.__send(self.__name, args)

  File "/home/pritishc/Envs/nereid/local/lib/python2.7/site-packages/tryton/jsonrpc.py", line 261, in __request
    verbose=self.__verbose

  File "/usr/lib/python2.7/xmlrpclib.py", line 1264, in request
    return self.single_request(host, handler, request_body, verbose)

  File "/usr/lib/python2.7/xmlrpclib.py", line 1312, in single_request
    response.msg,