Hola alguien tiene idea por donde buscar solucion??

Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 537, in _handle_exception return super(JsonRequest, self)._handle_exception(exception) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 574, in dispatch result = self._call_function(**self.params) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 310, in _call_function return checked_call(self.db, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/openerp/service/model.py", line 118, in wrapper return f(dbname, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 307, in checked_call return self.endpoint(*a, **kw) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 803, in __call__ return self.method(*args, **kw) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 403, in response_wrap response = f(*args, **kw) File "/usr/lib/python2.7/dist-packages/openerp/addons/web/controllers/main.py", line 948, in call_button action = self._call_kw(model, method, args, {}) File "/usr/lib/python2.7/dist-packages/openerp/addons/web/controllers/main.py", line 936, in _call_kw return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/openerp/api.py", line 250, in wrapper return old_api(self, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/openerp/api.py", line 372, in old_api result = method(recs, *args, **kwargs) File "/mnt/extra-addons/odoo-argentina/l10n_ar_afipws_fe/models/afip_point_of_sale.py", line 89, in test_pyafipws_point_of_sales ret = ws.ParamGetPtosVenta(sep=" ") File "/usr/local/lib/python2.7/dist-packages/pyafipws/utils.py", line 150, in capturar_errores_wrapper return func(self, *args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/pyafipws/wsfev1.py", line 826, in ParamGetPtosVenta Auth={'Token': self.Token, 'Sign': self.Sign, 'Cuit': self.Cuit}, File "/usr/local/lib/python2.7/dist-packages/pysimplesoap/client.py", line 147, in <lambda> return lambda *args, **kwargs: self.wsdl_call(attr,*args,**kwargs) File "/usr/local/lib/python2.7/dist-packages/pysimplesoap/client.py", line 342, in wsdl_call response = self.call(method, *params) File "/usr/local/lib/python2.7/dist-packages/pysimplesoap/client.py", line 220, in call raise SoapFault(unicode(response.faultcode), unicode(response.faultstring)) SoapFault: soap:Client: Server was unable to read request. ---> There is an error in XML document (5, 1167). ---> Input string was not in a correct format.