Mọi người xem lỗi này nó bị sao vậy:

Traceback (most recent call last):
  File "/opt/odoo/80/openerp/http.py", line 530, in _handle_exception
  File "/opt/odoo/80/openerp/http.py", line 581, in dispatch
    endpoint, model, method, end_time - start_time, start_vms / 1024, end_vms / 1024, (end_vms - start_vms)/1024)
  File "/opt/odoo/80/openerp/http.py", line 519, in _json_response
    # We need then to manage http sessions manually.
  File "/usr/lib/python2.7/dist-packages/simplejson/__init__.py", line 354, in dumps
    return _default_encoder.encode(obj)
  File "/usr/lib/python2.7/dist-packages/simplejson/encoder.py", line 262, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib/python2.7/dist-packages/simplejson/encoder.py", line 340, in iterencode
    return _iterencode(o, 0)
  File "/usr/lib/python2.7/dist-packages/simplejson/encoder.py", line 239, in default
    raise TypeError(repr(o) + " is not JSON serializable")
TypeError:  at 0x7f5b186f6e60> is not JSON serializable