TypeError: __init__() missing 1 required positional argument: 'on_delete'

[rohithmol]

Throws an error saying this argument is not implemented while call in line 7.

Traceback (most recent call last): File "manage.py", line 10, in <module> execute_from_command_line(sys.argv) File "/usr/local/lib/python3.5/dist-packages/django/core/management/__init__.py", line 381, in execute_from_command_line utility.execute() File "/usr/local/lib/python3.5/dist-packages/django/core/management/__init__.py", line 357, in execute django.setup() File "/usr/local/lib/python3.5/dist-packages/django/__init__.py", line 24, in setup apps.populate(settings.INSTALLED_APPS) File "/usr/local/lib/python3.5/dist-packages/django/apps/registry.py", line 114, in populate app_config.import_models() File "/usr/local/lib/python3.5/dist-packages/django/apps/config.py", line 211, in import_models self.models_module = import_module(models_module_name) File "/usr/lib/python3.5/importlib/__init__.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 986, in _gcd_import File "<frozen importlib._bootstrap>", line 969, in _find_and_load File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 673, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 673, in exec_module File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed File "/home/ms/Development/Virtual-Classroom/lecture/models.py", line 6, in <module> class CoursePack(models.Model): File "/home/ms/Development/Virtual-Classroom/lecture/models.py", line 7, in CoursePack user = models.ForeignKey(User, default=1) TypeError: __init__() missing 1 required positional argument: 'on_delete'