not able to start the start the server djano - django

Question

updated version
# Create your models here.
class PlacedOrder(models.Model):
restraunt = models.ForeignKey(Restraunts, on_delete=models.CASCADE)
order_time = models.TimeField(
auto_now_add=True)
estimated_delivery_time = models.TimeField()
actual_delivery_time = models.TimeField()
food_ready_time = models.TimeField()
total_price = models.DecimalField(9, 2)
I am getting this error for no reason, not knowing where the problem lies, it's not allowing me to run migrations as well, I have posted by trace below, need help with this
"C:\Users\atif\AppData\Local\Programs\Python\Python37\lib\threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\atif\PycharmProjects\my_proj_basic\virtual-env\lib\site-packages\django\utils\autoreload.py", line 64, in wrapper
fn(*args, **kwargs)
File "C:\Users\atif\PycharmProjects\my_proj_basic\virtual-env\lib\site-packages\django\core\management\commands\runserver.py", line 110, in inner_run
autoreload.raise_last_exception()
File "C:\Users\atif\PycharmProjects\my_proj_basic\virtual-env\lib\site-packages\django\utils\autoreload.py", line 87, in raise_last_exception
raise _exception[1]
File "C:\Users\atif\PycharmProjects\my_proj_basic\virtual-env\lib\site-packages\django\core\management\__init__.py", line 375, in execute
autoreload.check_errors(django.setup)()
File "C:\Users\atif\PycharmProjects\my_proj_basic\virtual-env\lib\site-packages\django\utils\autoreload.py", line 64, in wrapper
fn(*args, **kwargs)
File "C:\Users\atif\PycharmProjects\my_proj_basic\virtual-env\lib\site-packages\django\__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "C:\Users\atif\PycharmProjects\my_proj_basic\virtual-env\lib\site-packages\django\apps\registry.py", line 114, in populate
app_config.import_models()
File "C:\Users\atif\PycharmProjects\my_proj_basic\virtual-env\lib\site-packages\django\apps\config.py", line 301, in import_models
self.models_module = import_module(models_module_name)
File "C:\Users\atif\AppData\Local\Programs\Python\Python37\lib\importlib\__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "C:\Users\atif\PycharmProjects\my_proj_basic\food_deliveryapp\orders\models.py", line 9, in <module>
class PlacedOrder(models.Model):
File "C:\Users\atif\PycharmProjects\my_proj_basic\virtual-env\lib\site-packages\django\db\models\base.py", line 161, in __new__
new_class.add_to_class(obj_name, obj)
File "C:\Users\atif\PycharmProjects\my_proj_basic\virtual-env\lib\site-packages\django\db\models\base.py", line 326, in add_to_class
value.contribute_to_class(cls, name)
File "C:\Users\atif\PycharmProjects\my_proj_basic\virtual-env\lib\site-packages\django\db\models\fields\__init__.py", line 788, in contribute_to_class
if not getattr(cls, self.attname, None):
TypeError: getattr(): attribute name must be string

Answer 1

May be you are missing the attribute name.
price = models.DecimalField(15, 2,)
Try This:
price = models.DecimalField(max_digits=15, decimal_places=2,)