Hello,I have this error when validating the draft invoice on odoo. Does somebody have an idea
thank you in advance for your help
OpenERP Server ErrorTraceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 500, in _handle_exception    return super(JsonRequest, self)._handle_exception(exception)  File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 517, in dispatch    result = self._call_function(**self.params)  File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 283, in _call_function    return checked_call(self.db, *args, **kwargs)  File "/usr/lib/python2.7/dist-packages/openerp/service/model.py", line 113, in wrapper    return f(dbname, *args, **kwargs)  File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 280, in checked_call    return self.endpoint(*a, **kw)  File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 733, in __call__    return self.method(*args, **kw)  File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 376, in response_wrap    response = f(*args, **kw)  File "/usr/lib/python2.7/dist-packages/openerp/addons/web/controllers/main.py", line 955, in exec_workflow    return request.session.exec_workflow(model, id, signal)  File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 1036, in exec_workflow    r = self.proxy('object').exec_workflow(self.db, self.uid, self.password, model, signal, id)  File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 807, in proxy_method    result = dispatch_rpc(self.service_name, method, args)  File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 100, in dispatch_rpc    result = dispatch(method, params)  File "/usr/lib/python2.7/dist-packages/openerp/service/model.py", line 37, in dispatch    res = fn(db, uid, *params)  File "/usr/lib/python2.7/dist-packages/openerp/service/model.py", line 113, in wrapper    return f(dbname, *args, **kwargs)  File "/usr/lib/python2.7/dist-packages/openerp/service/model.py", line 183, in exec_workflow    return exec_workflow_cr(cr, uid, obj, signal, *args)  File "/usr/lib/python2.7/dist-packages/openerp/service/model.py", line 177, in exec_workflow_cr    return execute_cr(cr, uid, obj, 'signal_workflow', [res_id], signal)[res_id]  File "/usr/lib/python2.7/dist-packages/openerp/service/model.py", line 159, in execute_cr    return getattr(object, method)(cr, uid, *args, **kw)  File "/usr/lib/python2.7/dist-packages/openerp/api.py", line 237, in wrapper    return old_api(self, *args, **kwargs)  File "/usr/lib/python2.7/dist-packages/openerp/models.py", line 3472, in signal_workflow    result[res_id] = workflow.trg_validate(uid, self._name, res_id, signal, cr)  File "/usr/lib/python2.7/dist-packages/openerp/workflow/__init__.py", line 85, in trg_validate    return WorkflowService.new(cr, uid, res_type, res_id).validate(signal)  File "/usr/lib/python2.7/dist-packages/openerp/workflow/service.py", line 91, in validate    res2 = wi.validate(signal)  File "/usr/lib/python2.7/dist-packages/openerp/workflow/instance.py", line 75, in validate    wi.process(signal=signal, force_running=force_running, stack=stack)  File "/usr/lib/python2.7/dist-packages/openerp/workflow/workitem.py", line 120, in process    ok = self._split_test(activity['split_mode'], signal, stack)  File "/usr/lib/python2.7/dist-packages/openerp/workflow/workitem.py", line 248, in _split_test    self._join_test(t[0], t[1], stack)  File "/usr/lib/python2.7/dist-packages/openerp/workflow/workitem.py", line 257, in _join_test    WorkflowItem.create(self.session, self.record, activity, inst_id, stack=stack)  File "/usr/lib/python2.7/dist-packages/openerp/workflow/workitem.py", line 95, in create    workflow_item.process(stack=stack)  File "/usr/lib/python2.7/dist-packages/openerp/workflow/workitem.py", line 116, in process    if not self._execute(activity, stack):
  File "/usr/lib/python2.7/dist-packages/openerp/workflow/workitem.py", line 162, in _execute    returned_action = self.wkf_expr_execute(activity)  File "/usr/lib/python2.7/dist-packages/openerp/workflow/workitem.py", line 313, in wkf_expr_execute    return self.wkf_expr_eval_expr(activity['action'])  File "/usr/lib/python2.7/dist-packages/openerp/workflow/workitem.py", line 291, in wkf_expr_eval_expr    result = eval(line, env, nocopy=True)  File "/usr/lib/python2.7/dist-packages/openerp/tools/safe_eval.py", line 313, in safe_eval    return eval(c, globals_dict, locals_dict)  File "", line 1, in <module>  File "/usr/lib/python2.7/dist-packages/openerp/api.py", line 235, in wrapper    return new_api(self, *args, **kwargs)  File "/usr/lib/python2.7/dist-packages/openerp/api.py", line 552, in new_api    result = method(self._model, cr, uid, self.ids, *args, **kwargs)  File "/usr/lib/python2.7/dist-packages/openerp/addons/portal_sale/portal_sale.py", line 126, in invoice_validate    return super(account_invoice, self).invoice_validate(cr, uid, ids, context=context)ValueError: "invoice_validate() takes exactly 1 argument (5 given)" while evaluatingu'invoice_validate()'