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

[sergio11]

I am very interested in seeing how this challenge works, I have tried to mount it in a Gunicorn with Python 3.5. When installing the dependencies I get the following error:

(airProfilingNetwork) BISITE@bisite ~/Projects/AirProfilingWeb: gunicorn air_profiling.wsgi
[2018-01-03 22:51:05 +0100] [13027] [INFO] Starting gunicorn 19.7.1
[2018-01-03 22:51:05 +0100] [13027] [INFO] Listening at: http://127.0.0.1:8000 (13027)
[2018-01-03 22:51:05 +0100] [13027] [INFO] Using worker: sync
[2018-01-03 22:51:05 +0100] [13034] [INFO] Booting worker with pid: 13034
[2018-01-03 22:51:06 +0100] [13034] [ERROR] Exception in worker process
Traceback (most recent call last):
  File "/Users/BISITE/.virtualenvs/airProfilingNetwork/lib/python3.5/site-packages/gunicorn/arbiter.py", line 578, in spawn_worker
    worker.init_process()
  File "/Users/BISITE/.virtualenvs/airProfilingNetwork/lib/python3.5/site-packages/gunicorn/workers/base.py", line 126, in init_process
    self.load_wsgi()
  File "/Users/BISITE/.virtualenvs/airProfilingNetwork/lib/python3.5/site-packages/gunicorn/workers/base.py", line 135, in load_wsgi
    self.wsgi = self.app.wsgi()
  File "/Users/BISITE/.virtualenvs/airProfilingNetwork/lib/python3.5/site-packages/gunicorn/app/base.py", line 67, in wsgi
    self.callable = self.load()
  File "/Users/BISITE/.virtualenvs/airProfilingNetwork/lib/python3.5/site-packages/gunicorn/app/wsgiapp.py", line 65, in load
    return self.load_wsgiapp()
  File "/Users/BISITE/.virtualenvs/airProfilingNetwork/lib/python3.5/site-packages/gunicorn/app/wsgiapp.py", line 52, in load_wsgiapp
    return util.import_app(self.app_uri)
  File "/Users/BISITE/.virtualenvs/airProfilingNetwork/lib/python3.5/site-packages/gunicorn/util.py", line 352, in import_app
    __import__(module)
  File "/Users/BISITE/Projects/AirProfilingWeb/air_profiling/wsgi.py", line 16, in <module>
    application = get_wsgi_application()
  File "/Users/BISITE/.virtualenvs/airProfilingNetwork/lib/python3.5/site-packages/django/core/wsgi.py", line 12, in get_wsgi_application
    django.setup(set_prefix=False)
  File "/Users/BISITE/.virtualenvs/airProfilingNetwork/lib/python3.5/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/Users/BISITE/.virtualenvs/airProfilingNetwork/lib/python3.5/site-packages/django/apps/registry.py", line 112, in populate
    app_config.import_models()
  File "/Users/BISITE/.virtualenvs/airProfilingNetwork/lib/python3.5/site-packages/django/apps/config.py", line 198, in import_models
    self.models_module = import_module(models_module_name)
  File "/Users/BISITE/.virtualenvs/airProfilingNetwork/lib/python3.5/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/Users/BISITE/Projects/AirProfilingWeb/updater/models.py", line 9, in <module>
    class Pcap(models.Model):
  File "/Users/BISITE/Projects/AirProfilingWeb/updater/models.py", line 10, in Pcap
    user = models.ForeignKey('auth.User')
TypeError: __init__() missing 1 required positional argument: 'on_delete'
[2018-01-03 22:51:06 +0100] [13034] [INFO] Worker exiting (pid: 13034)
[2018-01-03 22:51:06 +0100] [13027] [INFO] Shutting down: Master
[2018-01-03 22:51:06 +0100] [13027] [INFO] Reason: Worker failed to boot.

Could you tell me what is the configuration needed to make the project work?

Thank you so much.

[salime45]

you need change the line :
user = models.ForeignKey('auth.User')
for:
user = models.ForeignKey('auth.User', on_delete=models.CASCADE)