openerp-prestashop-sync

Hi there!!!!
I am trying to connect openerp and prestashop using "openerp-prestashop.sync" connector but when I have to aprove connection appears the next computer error:

Client Traceback (most recent call last):
  File "/opt/openerp/server/openerp/addons/web/common/http.py", line 180, in dispatch
    response["result"] = method(controller, self, **self.params)
  File "/opt/openerp/server/openerp/addons/web/controllers/main.py", line 1004, in call_button
    action = self.call_common(req, model, method, args, domain_id, context_id)
  File "/opt/openerp/server/openerp/addons/web/controllers/main.py", line 948, in call_common
    return self._call_kw(req, model, method, args, {})
  File "/opt/openerp/server/openerp/addons/web/controllers/main.py", line 962, in _call_kw
    return getattr(req.session.model(model), method)(*args, **kwargs)
  File "/opt/openerp/server/openerp/addons/web/common/openerplib/main.py", line 250, in proxy
    args, kw)
  File "/opt/openerp/server/openerp/addons/web/common/openerplib/main.py", line 117, in proxy
    result = self.connector.send(self.service_name, method, *args)
  File "/opt/openerp/server/openerp/addons/web/common/http.py", line 611, in send
    raise fault

Server Traceback (most recent call last):
  File "/opt/openerp/server/openerp/addons/web/common/http.py", line 592, in send
    result = openerp.netsvc.dispatch_rpc(service_name, method, args)
  File "/opt/openerp/server/openerp/netsvc.py", line 360, in dispatch_rpc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/opt/openerp/server/openerp/service/web_services.py", line 572, in dispatch
    res = fn(db, uid, *params)
  File "/opt/openerp/server/openerp/osv/osv.py", line 167, in execute_kw
    return self.execute(db, uid, obj, method, *args, **kw or {})
  File "/opt/openerp/server/openerp/osv/osv.py", line 121, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/opt/openerp/server/openerp/osv/osv.py", line 176, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/opt/openerp/server/openerp/osv/osv.py", line 164, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/opt/openerp/server/openerp/addons/openerp_prestashop_sync/sale/shop/sale_shop.py", line 160, in approve_shop
    self.import_language(cr, uid, ids, context=context)
  File "/opt/openerp/server/openerp/addons/openerp_prestashop_sync/sale/shop/sale_shop.py", line 219, in import_language
    self.do_synch(cr, uid, ids, 'prestashop.lang', context=new_cnt)
  File "/opt/openerp/server/openerp/addons/openerp_prestashop_sync/sale/shop/sale_shop.py", line 212, in do_synch
    context=context)
  File "/opt/openerp/server/openerp/addons/openerp_prestashop_sync/prestashop_osv.py", line 631, in import_from_prestashop
    convert_presta, Thread=False)
  File "/opt/openerp/server/openerp/addons/openerp_prestashop_sync/prestashop_osv.py", line 655, in import_from_prestashop_thread
    ids = self.search_from_prestashop(cr, uid, shop_id, context=context)
  File "/opt/openerp/server/openerp/addons/openerp_prestashop_sync/prestashop_osv.py", line 430, in search_from_prestashop
    res_val = connection.search_prestashop(self._prestashop_name,options)
  File "/opt/openerp/server/openerp/addons/openerp_prestashop_sync/utils/prestashop.py", line 277, in search_prestashop
    requests.get(url, auth=(self.server_key,'')))
  File "/usr/local/lib/python2.7/dist-packages/requests/api.py", line 55, in get
    return request('get', url, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests/api.py", line 44, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 324, in request
    prep = req.prepare()
  File "/usr/local/lib/python2.7/dist-packages/requests/models.py", line 222, in prepare
    p.prepare_url(self.url, self.params)
  File "/usr/local/lib/python2.7/dist-packages/requests/models.py", line 288, in prepare_url
    scheme, auth, host, port, path, query, fragment = parse_url(url)
  File "/usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/util.py", line 156, in parse_url
    raise LocationParseError("Failed to parse: %s" % url)
LocationParseError: Failed to parse: Failed to parse: http:

Someone who could help me, please????