Error when run

[be4zad]

Hi, i run python manage.py migrat and get error:

Traceback (most recent call last): File "/home/behzad/bestoon/manage.py", line 22, in <module> execute_from_command_line(sys.argv) File "/home/behzad/bestoon/build/lib/python3.9/site-packages/django/core/management/__init__.py", line 419, in ``execute_from_command_line utility.execute() File "/home/behzad/bestoon/build/lib/python3.9/site-packages/django/core/management/__init__.py", line 395, in execute django.setup() File "/home/behzad/bestoon/build/lib/python3.9/site-packages/django/__init__.py", line 24, in setup apps.populate(settings.INSTALLED_APPS) File "/home/behzad/bestoon/build/lib/python3.9/site-packages/django/apps/registry.py", line 114, in populate app_config.import_models() File "/home/behzad/bestoon/build/lib/python3.9/site-packages/django/apps/config.py", line 301, in import_models self.models_module = import_module(models_module_name) File "/usr/lib/python3.9/importlib/__init__.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 1030, in _gcd_import File "<frozen importlib._bootstrap>", line 1007, in _find_and_load File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 680, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 850, in exec_module File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed File "/home/behzad/bestoon/web/models.py", line 31, in <module> class Expense(models.Model): File "/home/behzad/bestoon/web/models.py", line 35, in Expense user = models.ForeignKey(User) TypeError: __init__() missing 1 required positional argument: 'on_delete'

Of course, since I did not have Python 2, I used Python 3, does it not cause a problem?

[mamadinit]

Hi In the web/models.py file edit lines 35 and 45 models.ForeignKey(User) to models.ForeignKey(User, on_delete=models.CASCADE)