Error in Tshirtsize class

[VadVergasov]

On server startup by following code:

python3 manage.py runserver

I got this error message:

Exception in thread django-main-thread:
Traceback (most recent call last):
  File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/home/ubuntu/.local/lib/python3.6/site-packages/django/utils/autoreload.py", line 53, in wrapper
    fn(*args, **kwargs)
  File "/home/ubuntu/.local/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 109, in inner_run
    autoreload.raise_last_exception()
  File "/home/ubuntu/.local/lib/python3.6/site-packages/django/utils/autoreload.py", line 76, in raise_last_exception
    raise _exception[1]
  File "/home/ubuntu/.local/lib/python3.6/site-packages/django/core/management/__init__.py", line 357, in execute
    autoreload.check_errors(django.setup)()
  File "/home/ubuntu/.local/lib/python3.6/site-packages/django/utils/autoreload.py", line 53, in wrapper
    fn(*args, **kwargs)
  File "/home/ubuntu/.local/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/ubuntu/.local/lib/python3.6/site-packages/django/apps/registry.py", line 114, in populate
    app_config.import_models()
  File "/home/ubuntu/.local/lib/python3.6/site-packages/django/apps/config.py", line 211, in import_models
    self.models_module = import_module(models_module_name)
  File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/ubuntu/clist/events/models.py", line 45, in <module>
    class TshirtSize(Enum):
  File "/usr/lib/python3.6/enum.py", line 201, in __new__
    enum_member = __new__(enum_class, *args)
TypeError: int() argument must be a string, a bytes-like object or a number, not 'dict'

I tried to create Tshirtsize class in the console by the following code:

from django_enumfield.enum import Enum
class TshirtSize(Enum):
    S = 1
    M = 2
    L = 3
    XL = 4
    XXL = 5
    XXXL = 6

    labels = {
        S: 'S',
        M: 'M',
        L: 'L',
        XL: 'XL',
        XXL: 'XXL',
        XXXL: 'XXXL',
    }

And catched the same error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.6/enum.py", line 201, in __new__
    enum_member = __new__(enum_class, *args)
TypeError: int() argument must be a string, a bytes-like object or a number, not 'dict'