What cause this time out error:

2017-03-29 08:25:14,318 9819 INFO ? openerp.service.server: Worker WorkerHTTP (9819) alive 2017-03-29 08:25:14,806 9775 ERROR test openerp.service.server: Worker (9775) Exception occured, exiting...
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/openerp/service/server.py", line 766, in run
    self.process_work()
  File "/usr/lib/python2.7/site-packages/openerp/service/server.py", line 799, in process_work
    self.process_request(client, addr)
  File "/usr/lib/python2.7/site-packages/openerp/service/server.py", line 790, in process_request
    self.server.process_request(client, addr)
  File "/usr/lib64/python2.7/SocketServer.py", line 321, in process_request
    self.finish_request(request, client_address)
  File "/usr/lib64/python2.7/SocketServer.py", line 334, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "/usr/lib64/python2.7/SocketServer.py", line 651, in __init__
    self.finish()
  File "/usr/lib64/python2.7/SocketServer.py", line 710, in finish
    self.wfile.close()
  File "/usr/lib64/python2.7/socket.py", line 279, in close
    self.flush()
  File "/usr/lib64/python2.7/socket.py", line 303, in flush
    self._sock.sendall(view[write_offset:write_offset+buffer_size])
timeout: timed out

Is this a network connection issue? Thanks in advance