Hola acabo de instalar el modulo ML, todo bien pero a la hora de configurar obtengo el siguiente error:

Odoo Server Error

Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 650, in _handle_exception return super(JsonRequest, self)._handle_exception(exception) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 687, in dispatch result = self._call_function(**self.params) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 323, 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 316, in checked_call result = self.endpoint(*a, **kw) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 966, in __call__ return self.method(*args, **kw) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 516, in response_wrap response = f(*args, **kw) File "/usr/lib/python2.7/dist-packages/openerp/addons/web/controllers/main.py", line 895, in call_kw return self._call_kw(model, method, args, kwargs) File "/usr/lib/python2.7/dist-packages/openerp/addons/web/controllers/main.py", line 887, 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/models.py", line 5305, in search_read result = self.read(cr, uid, record_ids, fields, context=read_ctx) 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/models.py", line 3208, in read result = BaseModel.read(records, fields, load=load) File "/usr/lib/python2.7/dist-packages/openerp/api.py", line 248, in wrapper return new_api(self, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/openerp/models.py", line 3243, in read self._read_from_database(stored, inherited) File "/usr/lib/python2.7/dist-packages/openerp/api.py", line 248, in wrapper return new_api(self, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/openerp/models.py", line 3434, in _read_from_database res2 = self._columns[f].get(cr, self._model, ids, f, user, context=context, values=result) File "/usr/lib/python2.7/dist-packages/openerp/osv/fields.py", line 1501, in get result = self._fnct(obj, cr, uid, ids, name, self._arg, context) File "/opt/odoo/custom-addons/addons/meli_oerp-master/posting.py", line 70, in posting_update self.posting_query_questions( cr, uid, ids[0] ) File "/usr/lib/python2.7/dist-packages/openerp/api.py", line 250, in wrapper return old_api(self, *args, **kwargs) File "/opt/odoo/custom-addons/addons/meli_oerp-master/posting.py", line 99, in posting_query_questions response = meli.get("/items/"+posting.meli_id, {'access_token':meli.access_token}) TypeError: cannot concatenate 'str' and 'bool' objects

alguna idea? gracias