TypeError: expected string or bytes-like object

[vital...@gmail.com]

Hello,

i have problem in migration, in my "model.py" file  i added a new table and new fields (into the exisiting table) and thats what i got when i do ""..manage.py migrate..."" :

Operations to perform:

  Apply all migrations: utilisateur

Running migrations:

  Applying utilisateur.0002_auto_20170518_1610...Traceback (most recent call last):

  File "manage.py", line 22, in <module>

    execute_from_command_line(sys.argv)

  File "C:\Python36\lib\site-packages\django\core\management\__init__.py", line 363, in execute_from_command_line

    utility.execute()

  File "C:\Python36\lib\site-packages\django\core\management\__init__.py", line 355, in execute

    self.fetch_command(subcommand).run_from_argv(self.argv)

  File "C:\Python36\lib\site-packages\django\core\management\base.py", line 283, in run_from_argv

    self.execute(*args, **cmd_options)

  File "C:\Python36\lib\site-packages\django\core\management\base.py", line 330, in execute

    output = self.handle(*args, **options)

  File "C:\Python36\lib\site-packages\django\core\management\commands\migrate.py", line 204, in handle

    fake_initial=fake_initial,

  File "C:\Python36\lib\site-packages\django\db\migrations\executor.py", line 115, in migrate

    state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)

  File "C:\Python36\lib\site-packages\django\db\migrations\executor.py", line 145, in _migrate_all_forwards

    state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)

  File "C:\Python36\lib\site-packages\django\db\migrations\executor.py", line 244, in apply_migration

    state = migration.apply(state, schema_editor)

  File "C:\Python36\lib\site-packages\django\db\migrations\migration.py", line 129, in apply

    operation.database_forwards(self.app_label, schema_editor, old_state, project_state)

  File "C:\Python36\lib\site-packages\django\db\migrations\operations\fields.py", line 86, in database_forwards

    field,

  File "C:\Python36\lib\site-packages\django\db\backends\sqlite3\schema.py", line 238, in add_field

    self._remake_table(model, create_field=field)

  File "C:\Python36\lib\site-packages\django\db\backends\sqlite3\schema.py", line 113, in _remake_table

    self.effective_default(create_field)

  File "C:\Python36\lib\site-packages\django\db\backends\base\schema.py", line 228, in effective_default

    default = field.get_db_prep_save(default, self.connection)

  File "C:\Python36\lib\site-packages\django\db\models\fields\__init__.py", line 766, in get_db_prep_save

    prepared=False)

  File "C:\Python36\lib\site-packages\django\db\models\fields\__init__.py", line 1297, in get_db_prep_value

    value = self.get_prep_value(value)

  File "C:\Python36\lib\site-packages\django\db\models\fields\__init__.py", line 1292, in get_prep_value

    return self.to_python(value)

  File "C:\Python36\lib\site-packages\django\db\models\fields\__init__.py", line 1254, in to_python

    parsed = parse_date(value)

  File "C:\Python36\lib\site-packages\django\utils\dateparse.py", line 61, in parse_date

    match = date_re.match(value)

PS C:\Users\admin\vital>

i'v included the models.py file !!

so if someone can help !! 

thnx